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High 7.5 CVSS 3.1 PHP Published on 2026-05-10

In PHP versions 8.2. before 8.2.31, 8.3.

CVECVE-2026-7568 GHSANo GHSA advisory
View at the source View JSON Last modified at the source: 2026-07-24

Description

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.

Original text by NVD (NIST), public domain.

CVSS metrics 3.1

Source: security@php.net · secondary
High 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vectorNetwork
ComplexityHigh
Attack requirementsPresent
Privileges requiredNone
User interactionNone
Confidentiality (system)Low
Integrity (system)Low
Availability (system)Low
Confidentiality (others)Low
Integrity (others)Low
Availability (others)Low

References

Found a vulnerability?

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Does your server run PHP 8.2.x ≥ 8.2.0 < 8.2.31, 8.3.x ≥ 8.3.0 < 8.3.31, 8.4.x ≥ 8.4.0 < 8.4.21, 8.5.x ≥ 8.5.0 < 8.5.6?

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