CVE-2026-48913: Apache HTTP Server: mod_http2 memory corruption when file handles exhausted

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-08 · updated 2026-07-23
Weakness: CWE-416

Description

Use After Free vulnerability in Apache HTTP Server module mod_http2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67.

Affected products

Apache HTTP Server: from 2.4.55 before 2.4.68 — fixed in 2.4.68

How to fix

Upgrade to a fixed version: Apache HTTP Server 2.4.68. Check the vendor advisory for mitigations.

References

https://httpd.apache.org/security/vulnerabilities_24.html
http://www.openwall.com/lists/oss-security/2026/06/08/15

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