CVE-2023-3824: Stack buffer overflow / RCE when loading a crafted PHAR archive

critical Affects PHP engine. Feed 2026.10.29.4, updated 2026-10-29; published 2023-08-11.

Stack buffer overflow / RCE when loading a crafted PHAR archive

Package: PHP engine PHP engine
Affected branches: 8.0 → fixed in 8.0.30; 8.1 → fixed in 8.1.22; 8.2 → fixed in 8.2.8
Severity: critical CVSS 9.8
Exploitation: not on CISA KEV · EPSS 22% (97.6th percentile)
Remediation: Upgrade to 8.2.8 / 8.1.22 / 8.0.30. Avoid opening attacker-controlled PHAR archives.
Published: 2023-08-11

References

https://security-tracker.debian.org/tracker/CVE-2023-3824

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