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Alerts This Week
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Debian Apache2 Important Denial of Service DoS CVE-2026-49975 DSA-6323-1

debian
Calendar Grey June 6, 2026
Scroller Debian
Apache HTTP server now patched in Debian for DoS issue caused by incorrect cookie accounting. Upgrade recommended.
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%20covered

Topics Covered

security advisory denial of service debian important apache2 HTTP/2 issue

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/



Severity
important
Lowest
Low
Medium
High
Critical

Package: apache2
CVE ID: CVE-2026-49975

Topics%20covered

Topics Covered

security advisory denial of service debian important apache2 HTTP/2 issue

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