PHP security release advisory
From CDG’s Oct 22 company post: PHP's October 21 security release fixes CVE-2026-109618 and CVE-2026-109619 in versions 8.5.12, 8.4.27, 8.3.36 and 8.2.35. The vulnerabilities can allow remote code execution…
Source: Cyber Defense Group. Original reporting and dates are preserved.
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Original CDG company post
Critical PHP fixes are available. Check the runtime behind your web applications.
PHP's October 21 security release fixes CVE-2026-109618 and CVE-2026-109619 in versions 8.5.12, 8.4.27, 8.3.36 and 8.2.35. The vulnerabilities can allow remote code execution without authentication.
CERT-EU advisory 2026-018 warns that PHP installations serving web requests are at risk, including software that embeds PHP even when its presence is not obvious.
For federal technology teams and suppliers: • Inventory PHP runtimes and bundled dependencies, including vendor-managed systems. • Apply the appropriate vendor update and verify the running version, prioritizing internet-facing assets. • If immediate patching is not feasible, CERT-EU recommends considering isolation of internet-facing resources until the fix is applied and verified.
PHP 8.1 and older lack upstream maintenance; some distribution and LTS vendors provide backported fixes. Confirm your vendor's status or move to a supported branch. Temporary mitigations do not fully fix these flaws.
Official advisory: https://lnkd.in/e5cC3dEp PHP release and update instructions: https://lnkd.in/enzbyafj
Illustrative archival photo: Columbia supercomputer, 2006, Trower/NASA, U.S. public domain; cropped. It does not depict an affected PHP system or imply endorsement. https://lnkd.in/ebu64uUF
#VulnerabilityManagement #FederalIT #CyberDefenseGroup
Sources and references
Source publication notes
Historical technology archive. This original commentary does not describe CDG’s current consulting services and is not current security or compliance guidance.
Preserved from CDG’s company LinkedIn history. Original publication dates are retained; later updates may change the source, status, or deadlines.
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