GoKawiilPHP team schedules critical security release for October 21
The PHP project announced an upcoming security release fixing two critical vulnerabilities, each rated 9.2 on the CVSS v4.0 scale. The patch is planned for Wednesday, 21 October 2026 at 14:00 UTC, with the PHP security team urging users to prepare in advance.
GoKawiil's interpretation of the reporting above, not reported fact.
A CVSS score of 9.2 indicates flaws severe enough to warrant urgent attention once details and patches are public, so organizations running PHP may need to plan maintenance windows ahead of the release. The team's note that it could release earlier if exploitation is detected suggests the vulnerabilities may already be under active analysis or at risk of leaking before the scheduled date.
- Two critical PHP vulnerabilities, each CVSS v4.0 9.2, will be patched
- Fix is scheduled for Wednesday, 21 October 2026 at 14:00 UTC
- Release could come earlier if exploit details leak or active attacks are detected
Source: news-web.php.net — Jakub Zelenka, 2026-10-20
Published there as: “Upcoming critical PHP security release”
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