🛡️ CVE-2024-2757 — libphp

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

PHP mb_encode_mimeheader runs endlessly for some inputs

In PHP 8.3.* before 8.3.5, function mb_encode_mimeheader() runs endlessly for some inputs that contain long strings of non-space characters followed by a space. This could lead to a potential DoS attack if a hostile user sends data to an application that uses this function.

Affected software

CVE-2024-2757 is recorded against 3 packages.

  • libphp
  • php
  • php-min

Timeline and source

Published on 11 August 2025 and last revised on 8 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openwall.com (Web)
github.com (Web)
nvd.nist.gov (Web)
security.netapp.com (Web)
lists.fedoraproject.org (Web)

CVE-2024-2757 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2025-08-11
Updated 2026-08-12
Modified 2026-07-08
Fix URL N/A

Affected Packages

Software From version Fixed in
libphp — —
php — —
php-min — —

Similar Threats

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