SEPTEMBER 23, 2026
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Case File

CVE-2026-7259

MEDIUM · CVSS 6.5 EPSS 0.20% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-10 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.5. Public exploit code or proof-of-concept references have been detected in its references. It may lead to a denial-of-service condition.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-7259
Severity
MEDIUM
CVSS
6.5
EPSS
0.20%

Original NVD 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, a mismatch between encoding lists in Oniguruma and mbfl leads to  a NULL pointer dereference, resulting in a segmentation fault and denial of service. The vulnerability is exploitable when user-controlled input can influence the encoding passed to mb_regex_encoding().

Related CVEs

Other vulnerabilities affecting the same vendor(s)