CVE-2026-33007: Apache HTTP Server: mod_authn_socache crash
A NULL pointer dereference in the modauthnsocache in Apache HTTP Server 2.4.66 and earlier allows an unauthenticated remote user to crash a child process in a caching forward proxy configuration.
Users are recommended to upgrade to version 2.4.67, which fixes this issue.
Other sources
Apache HTTP Server: modauthnsocache crash
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 2.4.67-1 - Upgrade
Upgrade
Apache HTTP Server (mod_authn_socache)to a version that resolves this vulnerability.Fixed in 2.4.67Patch CVE-2026-33007
Event History
Frequently Asked Questions
What is the severity of CVE-2026-33007?
CVE-2026-33007 is classified as a moderate severity vulnerability due to its potential to cause denial of service in Apache HTTP Server.
How do I fix CVE-2026-33007?
To fix CVE-2026-33007, users should upgrade Apache HTTP Server to version 2.4.67 or later.
What systems are affected by CVE-2026-33007?
CVE-2026-33007 affects Apache HTTP Server versions up to and including 2.4.66.
Can CVE-2026-33007 be exploited remotely?
Yes, CVE-2026-33007 can be exploited by an unauthenticated remote user to crash a child process.
What component of Apache HTTP Server is impacted by CVE-2026-33007?
CVE-2026-33007 impacts the mod_authn_socache component within the Apache HTTP Server.