WordPress powers a significant share of the web, depending on which measurement source you check, somewhere around two-fifths to well over 40% of all websites, making it by a wide margin the most-used content management system in existence. That scale is exactly why updates matter more here than on a smaller, less-targeted platform: a WordPress install is a bigger, more consistently profitable target for automated attacks than almost any other software category, simply because of how many sites run it and how many of them lag behind on updates. Understanding why updating matters, and building an actual routine around it, is different from just clicking “update” reflexively whenever a notification appears.
Why WordPress updates exist in the first place
WordPress core is open-source software, meaning its full codebase is publicly viewable and maintained by a large, distributed community of contributors rather than a single company. This openness is a genuine strength, security researchers, developers, and hobbyists worldwide can inspect the code, and vulnerabilities discovered by legitimate researchers get reported and patched through a coordinated disclosure process. But the same openness that lets defenders study the code also lets attackers study it, which is precisely why running an outdated version is disproportionately risky: once a vulnerability in an older WordPress version becomes public knowledge (often at the moment the patch for it is released, since patch notes and changelogs effectively announce what was broken), automated scanning tools start probing the entire web within hours looking for sites still running the vulnerable version.
Reason 1: closing security vulnerabilities before they get exploited at scale
This is the most consequential reason, and it deserves more than a passing mention. WordPress security researchers and the core development team track and patch vulnerabilities continuously, and security-focused point releases (the kind that increment a version number like 6.5.1 to 6.5.2) are frequently released specifically to close a vulnerability that’s either already being actively exploited in the wild or was responsibly disclosed by a researcher shortly before public release. The gap between a patch being available and a site owner actually applying it is exactly the window automated attack bots are built to exploit, they don’t target specific sites by name, they scan broad swaths of the internet looking for any site still running a known-vulnerable version, which is why “I’m a small site, nobody would bother attacking me” is a common but mistaken assumption. Attackers aren’t targeting a site specifically; they’re targeting the vulnerability, wherever it happens to still exist.
Beyond WordPress core itself, this dynamic applies at least as strongly to plugins and themes, which are individually maintained by separate teams and often patch vulnerabilities on their own release schedules rather than in sync with core. A site can be running a fully current WordPress core and still carry serious, exploitable risk through a single outdated plugin, which is why treating “update WordPress” as covering core alone, while leaving plugins on autopilot or ignored entirely, misses a large share of the actual attack surface.
Reason 2: fewer glitches and more day-to-day stability
Beyond security, every WordPress release includes genuine bug fixes addressing issues reported by the broader user community since the previous release, rendering quirks, editor bugs, compatibility issues surfaced through real-world use at massive scale. A site running several versions behind accumulates the combined weight of every bug that’s been fixed since, none of which the site owner benefits from until they actually update. This shows up in ways that are easy to misattribute to something else entirely, a flaky block editor, an admin screen that occasionally behaves oddly, when the actual root cause is simply an outdated core version carrying bugs that were already fixed months or years earlier.
Reason 3: measurable performance improvements over time
WordPress core development has invested consistently in performance work across recent major versions, query optimization, reduced database calls for common operations, and JavaScript and CSS loading improvements that reduce what a browser has to process before a page becomes interactive. These improvements compound release over release; a site running a WordPress version from several years ago is missing out on a meaningful stack of performance work, not just one isolated fix. For a site where page speed affects search ranking, conversion rate, or basic user patience, staying current with core is a genuinely free performance improvement that costs nothing beyond the time to run the update.
Reason 4: theme and plugin compatibility that keeps everything working together
Themes and plugins are built against specific WordPress core APIs, and while WordPress maintains strong backward compatibility as a stated project value, that compatibility isn’t infinite. Plugin and theme developers, for their part, generally test and build against recent WordPress versions, not years-old ones, which means the compatibility risk actually runs in both directions: an outdated core can eventually stop supporting a newer plugin correctly, and an outdated plugin can eventually break against a newer core. Keeping all three, core, theme, and plugins, reasonably current together, rather than letting one lag dramatically behind the others, is what actually prevents the kind of compatibility clash that shows up as a broken layout or a fatal error after what looked like a routine update.
Reason 5: access to genuinely new capabilities, not just patches
Framing every update purely as defensive maintenance undersells what recent WordPress releases have actually shipped. The ongoing rollout of the block-based Site Editor, expanded theme.json-driven design controls, and steady improvements to the block editor’s content-authoring experience represent real, usable functionality that simply isn’t available on an older core version, no matter how well-maintained that older install otherwise is. A site holding back on updates isn’t just accumulating security and bug-fix debt, it’s also falling further behind on capability, to the point where eventually catching up requires a much larger, riskier jump instead of a series of small, manageable ones.
Reason 6: avoiding the compounding cost of falling further behind
This is the reason that’s easiest to underweight because its cost is deferred rather than immediate. A site that skips updates for a year or two doesn’t just miss twelve or twenty-four months of improvements, it accumulates a widening gap between its installed version and current best practices, and every additional skipped update makes the eventual catch-up update riskier, since more has changed in the interim and more can conflict. Sites that fall multiple major versions behind frequently need a staged update process (working through intermediate versions rather than jumping straight to current) specifically because jumping too many versions at once increases the odds of a plugin or theme conflict surfacing all at once, which is a genuinely harder problem to diagnose than catching issues one release at a time.
A workable update routine, not just “click update when you see it”
Treating updates reactively, only applying them when a notification is impossible to ignore, is how sites end up multiple versions behind without anyone noticing. A more sustainable routine:
- Back up before every update, not just major ones. A reliable backup plugin (UpdraftPlus and BackWPup are both established free options) running on a schedule, combined with a manual backup immediately before any significant update, means a bad update is a minor inconvenience rather than a genuine crisis.
- Use a staging environment for anything beyond a minor point release. Most decent hosting providers offer a one-click staging copy of a live site; testing a major update there first catches conflicts before they reach visitors, rather than after.
- Update core, themes, and plugins together, not in isolation. Updating only core while leaving plugins months behind (or the reverse) is exactly the scenario that produces compatibility conflicts, as covered above.
- Read the changelog for major releases before updating, at minimum skimming for any flagged breaking changes or deprecated features that might affect a specific plugin or custom code the site relies on.
- Set a fixed monthly review, even if updates get applied more frequently as needed. A recurring calendar reminder to check for and apply any pending updates prevents the slow drift into being multiple versions behind that happens when updates are left entirely to memory or notification fatigue.
Automatic updates: when they help and when they need a closer look
WordPress has supported automatic background updates for minor and security releases by default since version 3.7, specifically because these targeted, low-risk releases are exactly the ones worth applying immediately without waiting for manual review, they’re the security-critical patches discussed above, and speed of application genuinely matters for them. Major version updates remain manual by default, which is the right default: they carry meaningfully more risk of introducing a compatibility issue and benefit from the staging-and-review process described above rather than being applied blind. Site owners can adjust this behavior, enabling fully automatic updates for everything including major releases, or the reverse, disabling even automatic minor updates, through core settings or a management plugin, and the right choice depends on how actively the site is monitored: a site with someone checking it regularly can safely take on more manual control, while a site that mostly runs unattended benefits from leaning on WordPress’s automatic security updates as a safety net.
Common reasons people delay updates, and why they don’t hold up
A few justifications for putting off updates come up repeatedly, and it’s worth examining each honestly:
- “My site is too small to be a target.” As covered above, most WordPress attacks are automated and untargeted, bots scanning for known vulnerabilities across the entire web, not a person specifically choosing to attack a small business site. Site size and traffic level are almost irrelevant to this particular risk.
- “The last update broke something, so I stopped updating.” This is a real and understandable reaction, but the actual lesson from a bad update experience should be “test on staging and back up before updating,” not “stop updating entirely.” Avoiding updates because one went badly is treating the symptom rather than the actual cause, which was almost always a missing backup or staging step, not the update itself being inherently risky.
- “I don’t have time to deal with updates regularly.” This is the strongest of the common objections, and it’s exactly what makes a scheduled routine (or a managed hosting plan that handles updates, discussed below) worth setting up once rather than repeatedly making the same time-pressured decision to skip an update under deadline pressure.
- “Custom code on my site might break with an update.” A legitimate concern for sites with heavily customized code, but the answer is testing that custom code against updates in staging, not skipping updates indefinitely, a growing gap between installed version and current only makes eventual compatibility problems with that same custom code worse, not better.
What a bad update actually looks like, and how a backup changes the outcome
Picture a small business site running an outdated WordPress core alongside a handful of plugins, one of which hasn’t been updated in over a year. The site owner finally applies a batch of pending updates all at once, directly on the live site, with no recent backup. One of the older plugins, not built to expect the newer core version, throws a fatal error that takes the entire site down, a blank white screen where the homepage used to be. Without a backup, recovering from this means either digging through hosting-level file and database backups (if the host even keeps them, and for how long varies significantly), or manually troubleshooting which specific plugin caused the conflict by deactivating them one at a time through FTP access, which can take hours for someone unfamiliar with the process.
Now picture the same scenario with a backup taken five minutes before the update: the same fatal error happens, but the fix is a single restore action from the backup plugin’s dashboard, back to a known-working state within minutes. The updates can then be applied one at a time instead of all at once, isolating which specific one caused the conflict, updating everything else safely, and either waiting for a fix from that one plugin’s developer or finding an alternative. The technical failure is identical in both scenarios, the difference in outcome is entirely about whether a backup existed beforehand.
Checking what actually needs updating
WordPress surfaces pending updates directly in the dashboard, under the Updates screen (Dashboard » Updates), which lists any available core, theme, and plugin updates in one place along with a changelog link for each. This same screen is also where the “how many versions behind” question gets answered concretely, a site that hasn’t been checked in a while often reveals a surprising accumulation of pending plugin updates, not just a core version update, once someone actually looks. For sites managing multiple WordPress installs, a management dashboard tool (like the free tier of ManageWP or InfiniteWP) consolidates update status across every site into a single view, which matters more than it sounds for anyone responsible for more than two or three separate WordPress sites, where checking each one’s dashboard individually becomes its own recurring chore.
Managed hosting: outsourcing the routine rather than skipping it
For site owners who genuinely don’t have the time or inclination to manage updates on the schedule described above, managed WordPress hosting providers (WP Engine, Kinsta, and several others) typically handle core updates automatically as part of the hosting plan, and some extend that to popular plugins as well, with automated backups and staging built into the same service. This isn’t a way of avoiding the update discipline covered in this piece, it’s paying a hosting provider to run exactly that same discipline on the site owner’s behalf, which is a completely reasonable tradeoff for a business that would otherwise let updates lapse through simple lack of bandwidth. The one thing this doesn’t solve automatically is custom code and less-common plugins, which still generally need manual attention even on a fully managed host.
The bottom line
Updating WordPress isn’t a single defensive checkbox, it’s simultaneously a security practice, a performance practice, and a compatibility practice, and treating it as any one of those alone misses the other two. The sites that get burned by updates are almost always the ones that either never update at all, accumulating risk silently for months or years, or the ones that update carelessly, skipping backups and staging entirely. A steady, routine cadence, backed up, tested where it matters, applied consistently rather than in occasional large batches, turns updating from an occasional source of anxiety into one of the more reliably low-cost investments a site owner can make in the site’s ongoing health.
None of this requires deep technical expertise to get right. It requires a backup taken before every update, a habit of checking the dashboard on a fixed schedule rather than waiting for a notification to force the issue, and a willingness to test major changes somewhere other than the live site first. Those three habits, applied consistently, prevent the overwhelming majority of the update horror stories that make site owners nervous about the process in the first place.