Medium5.9Red Hat & Ubuntu Linux
Denial of Service via improper handling of signed characters in ctype functions
CVE-2026-7258 Published May 10, 2026
CVE-2026-7258
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Denial of Service via improper handling of signed characters in ctype functions. Red Hat rates this moderate (CVSS 5.9). Weakness: CWE-839. Affected package(s): php, php8.4, php:8.2, php:7.4, php:8.3, php-main. Resolved in Red Hat advisory RHSA-2026:22649 — update the affected packages (`sudo dnf update`).
Affected versions
- php-0:8.0.30-6.el9_8
- php8.4-0:8.4.21-1.el10_2
- php:8.2-9080020260521080715.9
- php:7.4-8100020260604072603.f7998665
- php:8.3-9080020260521113736.9
- php-0:8.3.31-1.el10_2
- php-main-8.5.6-1.hum1
- php:8.2-8100020260521052503.f7998665
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- RHSA-2026:22649
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:22649 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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