WordPress Patch Rollout Window Lets Attackers Exploit the Same Flaw It Fixes
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Picus Security researcher Umut Bayram found that some WordPress sites can still be attacked while they install the fix for an actively exploited flaw. According to the report, the update that installs the fix unpacks its files using the site's old, unpatched code. An attacker who strikes at the right moment can run code on the server during that window.
Why It Matters
The finding challenges a common assumption that applying a patch immediately removes exposure. A site that is being actively targeted for the flaw may remain briefly exploitable even after the update begins, because the fix is unpacked using the old code.
What Defenders Should Watch For
- The researcher advises blocking web access to the site during the update process.
- Watch for exploitation attempts around update and maintenance windows, not just before a patch is applied.
- Review WordPress update logs and web server access logs for unusual requests near update timestamps.
The source summary does not name the specific flaw or affected component. For the full write-up, see the source: The Hacker News.