CVE catalog

CVE-2017-9050

libxml2: CVE-2017-9050

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 xmlDictAddString 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 CVE-2016-1839.

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	[863018]
Debian	libxml2	source	forky	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863018]
Debian	libxml2	source	trixie	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863018]
Debian	libxml2	source	bookworm	`2.9.4+dfsg1-3.1`	not yet assigned	Not reported	[863018]
Ubuntu	libxml2	deb	14.04	`2.9.1+dfsg1-3ubuntu4.10`	Not reported	UBUNTU-CVE-2017-9050	Not reported
Ubuntu	libxml2	deb	16.04	`2.9.3+dfsg1-1ubuntu0.3`	Not reported	UBUNTU-CVE-2017-9050	Not reported

[Debian bug #863018]

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]