Debian Apache2 Important Denial of Service DoS CVE-2026-49975 DSA-6323-1
debian
June 6, 2026
It was discovered that incorrect cookie header accounting in the HTTP/2 implementation of the Apache HTTP server may result in denial of service (excessive resources consumption)
Topics Covered
Summary
For the oldstable distribution (bookworm), this problem has been fixed
in version 2.4.67-1~deb12u3.
For the stable distribution (trixie), this problem has been fixed in
version 2.4.67-1~deb13u3.
We recommend that you upgrade your apache2 packages.
For the detailed security status of apache2 please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/apache2
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
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Severity
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Critical
Package: apache2
CVE ID: CVE-2026-49975
Topics Covered
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