The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when…

Description

The xsl_ext_function_php function in ext/xsl/xsltprocessor.c in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13, when libxml2 before 2.9.2 is used, does not consider the possibility of a NULL valuePop return value before proceeding with a free operation during initial error checking, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted XML document, a different vulnerability than CVE-2015-6838.

Scores

EPSS (exploitation in 30 days)

7.3% · top 5.6% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

• n/a

Affected products

• n/a

  • affected n/a

References (6)

• 76738 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• 1033548 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• https://bugs.php.net/bug.php?id=69782 (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://php.net/ChangeLog-5.php (opens in a new tab)x_refsource_CONFIRMx_transferred
• DSA-3358 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• GLSA-201606-10 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2015-6837](https://trackcve.app/badge/CVE-2015-6837.svg)](https://trackcve.app/cve/CVE-2015-6837)

Record last updated 6 Aug 2024, 07:36 UTC.