CVE-2011-1471: n/a vulnerability

CVE-2011-1471: Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent...

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:28 UTC (UTC+00:00)

Security readout for executives and security teams

A flaw in PHP's Zip extension can let a malformed archive consume excessive CPU. The main business risk is denial of service in systems that still run PHP before 5.3.6 and process untrusted ZIP files. Exposure is most likely in legacy PHP applications using the Zip extension to inspect or extract user-supplied archives. Structured affected-product data is incomplete in the bundle. Prioritize remediation where old PHP systems process external uploads. For modern supported PHP deployments, urgency is lower, but legacy exposure should be removed. Mitigation focus: Upgrade PHP to a supported release or vendor package containing the 5.3.6-era fix.; Apply relevant OS vendor security updates for bundled PHP packages.; Limit ZIP processing to authenticated or trusted workflows where practical..

Prepared: Jun 24, 2026, 13:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 20, 2011, 01:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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CVE List V5 sourceCVE List V5

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