CVE catalog

CVE-2017-9049

libxml2: CVE-2017-9049

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Published: May 15, 2017, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 4.63% · Oct 25, 2026

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictComputeFastKey function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for libxml2 Bug 759398.

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	libxml2	sid	`2.15.4+dfsg-1`	fixed
Debian	libxml2	forky	`2.15.4+dfsg-1`	fixed
Debian	libxml2	trixie	`2.12.7+dfsg+really2.9.14-2.1+deb13u3`	fixed
Debian	libxml2	trixie-security	`2.12.7+dfsg+really2.9.14-2.1+deb13u1`	fixed
Debian	libxml2	bookworm	`2.9.14+dfsg-1.3~deb12u6`	fixed
Debian	libxml2	bookworm-security	`2.9.14+dfsg-1.3~deb12u4`	fixed
Cpe	libxml2	Not reported	Not reported	unknown
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu2`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu3`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.1`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.2`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.3`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.4`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.5`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.6`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.7`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.8`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.9`	vulnerable
Ubuntu	libxml2	14.04	`2.9.1+dfsg1-3ubuntu4.10`	fixed
Ubuntu	libxml2	16.04	`2.9.2+zdfsg1-4`	vulnerable
Ubuntu	libxml2	16.04	`2.9.2+zdfsg1-4ubuntu1`	vulnerable
Ubuntu	libxml2	16.04	`2.9.2+zdfsg1-4ubuntu2`	vulnerable
Ubuntu	libxml2	16.04	`2.9.2+zdfsg1-4ubuntu3`	vulnerable
Ubuntu	libxml2	16.04	`2.9.3+dfsg1-1`	vulnerable
Ubuntu	libxml2	16.04	`2.9.3+dfsg1-1ubuntu0.1`	vulnerable
Ubuntu	libxml2	16.04	`2.9.3+dfsg1-1ubuntu0.2`	vulnerable
Ubuntu	libxml2	16.04	`2.9.3+dfsg1-1ubuntu0.3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	libxml2	source	sid	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863019]
Debian	libxml2	source	forky	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863019]
Debian	libxml2	source	trixie	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863019]
Debian	libxml2	source	bookworm	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863019]
Ubuntu	libxml2	deb	14.04	`2.9.1+dfsg1-3ubuntu4.10`	Not reported	UBUNTU-CVE-2017-9049	Not reported
Ubuntu	libxml2	deb	16.04	`2.9.3+dfsg1-1ubuntu0.3`	Not reported	UBUNTU-CVE-2017-9049	Not reported

[Debian bug #863019]

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

[libxml2]Unknown
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
[libxml2-dev]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
[libxml2-doc]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · all · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · all · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
[libxml2-utils]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
[python3-libxml2]Unknown
Source package: [libxml2]
Details (4)
- 2.9.14+dfsg-1.3~deb12u6 · amd64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u6 · arm64 · bookworm
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · amd64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm
- 2.9.14+dfsg-1.3~deb12u4 · arm64 · bookworm-security
  Fixed · Fixed: 2.9.4+dfsg1-3.1
  dsa · libxml2 · debian · bookworm

Observed: Oct 23, 2026, 5:31:44 PM UTC

References

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