CVE-2026-7568 Affecting php8.5 package, versions <8.5.4-0ubuntu1.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.46% (37th percentile)

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  • Snyk IDSNYK-UBUNTU2604-PHP85-16874229
  • published29 May 2026
  • disclosed10 May 2026

Introduced: 10 May 2026

CVE-2026-7568  (opens in a new tab)

How to fix?

Upgrade Ubuntu:26.04 php8.5 to version 8.5.4-0ubuntu1.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php8.5 package and not the php8.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:26.04 relevant fixed versions and status.

In PHP versions 8.2.* before 8.2.31, 8.3.* before 8.3.31, 8.4.* before 8.4.21, and 8.5.* before 8.5.6, the metaphone() function in ext/standard/metaphone.c uses a signed int variable to track the current position within the input string. If a string longer than 2,147,483,647 bytes is passed, a signed integer overflow occurs, resulting in undefined behavior. This can lead to an out-of-bounds read, causing a segmentation fault or access to unrelated memory, and may affect the availability of the PHP process.

CVSS Base Scores

version 3.1