What’s Vulnerable › Vulnerabilities

CVE-2026-23918: Apache HTTP Server: http2: double free and possible RCE on early reset

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 49.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-04 · updated 2026-10-26
• Weakness: CWE-415

Description

Double Free and possible RCE vulnerability in Apache HTTP Server with the HTTP/2 protocol. This issue affects Apache HTTP Server: 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.

Affected products

• Apache HTTP Server: 2.4.66

References

• https://httpd.apache.org/security/vulnerabilities_24.html
• http://www.openwall.com/lists/oss-security/2026/05/04/19
• https://access.redhat.com/errata/RHSA-2026:13938
• https://access.redhat.com/security/cve/CVE-2026-23918
• https://bugzilla.redhat.com/show_bug.cgi?id=2465304
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23918.json

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