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PHP CVEs

Vulnerabilities in the PHP language itself, and which PHP versions they affect.

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CVE-2010-1866

CRITICAL 9.8 CVSS 3.1
Published
May 7, 2010
Last modified
June 16, 2026
NVD status
Modified
Reported by
cve@mitre.org
Weakness
CWE-190
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.

Affected products and versions

  • PHP — From 5.3.0 (including) to 5.3.2 (including)

References

  • lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2010-09/msg00006.html Mailing List
  • php-security.org http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html Broken Link, Exploit
  • nvd.nist.gov Official NVD record