CVE-2026-92842

The convert.base64-encode, convert.quoted-printable-encode and convert.quoted-printable-decode stream filters accept a line-break-chars option whose length is tracked separately from the string itself. The filter constructors duplicate the value with pestrdup(), which stops at the first NUL byte, while keeping the original length. When the filter later emits a line break it copies the recorded length out of the truncated allocation, reading past its end and placing adjacent heap bytes into the filter output.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/php/php-src/security/advisories/GHSA-88hq-2827-7pg6

Configurations

No configuration.

History

25 Sep 2026, 22:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-25 22:18

Updated : 2026-09-29 21:27

NVD link : CVE-2026-92842

Mitre link : CVE-2026-92842

CVE.ORG link : CVE-2026-92842

JSON object : View

Products Affected

No product.

CWE

CWE-122

Heap-based Buffer Overflow

CWE-125

Out-of-bounds Read

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