CVE catalog

CVE-2022-37436

apache2: CVE-2022-37436

Severity: High · CVSS 7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published: Jan 1, 2022, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 55.91% · Oct 25, 2026

Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	apache2	sid	`2.4.69-1`	fixed
Debian	apache2	forky	`2.4.69-1`	fixed
Debian	apache2	trixie	`2.4.68-1~deb13u1`	fixed
Debian	apache2	trixie-security	`2.4.69-1~deb13u1`	fixed
Debian	apache2	bookworm	`2.4.68-1~deb12u1`	fixed
Debian	apache2	bookworm-security	`2.4.67-1~deb12u3`	fixed
Ubuntu	apache2	pro	`2.4.12-2ubuntu2`	vulnerable
Ubuntu	apache2	pro	`2.4.17-1ubuntu1`	vulnerable
Ubuntu	apache2	pro	`2.4.17-2ubuntu1`	vulnerable
Ubuntu	apache2	pro	`2.4.17-3ubuntu1`	vulnerable
Ubuntu	apache2	pro	`2.4.18-1ubuntu1`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu1`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu2`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.1`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.2`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.3`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.4`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.5`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.7`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.8`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.9`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.10`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.12`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.13`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.14`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.15`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm1`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm2`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm3`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm4`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm5`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm6`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm7`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm8`	vulnerable
Ubuntu	apache2	pro	`2.4.18-2ubuntu3.17+esm9`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	apache2	source	sid	`2.4.55-1`	not yet assigned	Not reported	Not reported
Debian	apache2	source	forky	`2.4.55-1`	not yet assigned	Not reported	Not reported
Debian	apache2	source	trixie	`2.4.55-1`	not yet assigned	Not reported	Not reported
Debian	apache2	source	bookworm	`2.4.55-1`	not yet assigned	Not reported	Not reported
Ubuntu	apache2	deb	pro	`2.4.18-2ubuntu3.17+esm9`	Not reported	USN-5839-2	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[apache2]Unknown
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-bin]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-data]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · all · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · all · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-dev]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-doc]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · all · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · all · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · all · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-ssl-dev]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-suexec-custom]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-suexec-pristine]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[apache2-utils]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[libapache2-mod-md]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
[libapache2-mod-proxy-uwsgi]Unknown
Source package: [apache2]
Details (4)
- 2.4.68-1~deb12u1 · amd64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.68-1~deb12u1 · arm64 · bookworm
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · amd64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm
- 2.4.67-1~deb12u3 · arm64 · bookworm-security
  Fixed · Fixed: 2.4.55-1
  dsa · apache2 · debian · bookworm

Observed: Oct 23, 2026, 6:29:03 PM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]