CVE catalog

CVE-2018-7753

python-bleach: CVE-2018-7753

Severity: Critical · CVSS 9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Mar 7, 2018, 11:29:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 2.17% · Oct 25, 2026

An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

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	python-bleach	sid	`6.3.0-1`	fixed
Debian	python-bleach	forky	`6.3.0-1`	fixed
Debian	python-bleach	trixie	`6.2.0-1`	fixed
Debian	python-bleach	bookworm	`5.0.1-2`	fixed
Opensuse	python-bleach	tumbleweed	`6.4.0-1.1`	fixed
Ubuntu	python-bleach	pro	`2.0-1`	vulnerable
Ubuntu	python-bleach	pro	`2.1.2-1`	vulnerable
Ubuntu	python-bleach	pro	`2.1.2-1ubuntu0.1~esm1`	fixed
Opensuse	python-bleach	tumbleweed	`6.1.0-1.5`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	python-bleach	source	sid	`2.1.3-1`	not yet assigned	Not reported	[892252]
Debian	python-bleach	source	forky	`2.1.3-1`	not yet assigned	Not reported	[892252]
Debian	python-bleach	source	trixie	`2.1.3-1`	not yet assigned	Not reported	[892252]
Debian	python-bleach	source	bookworm	`2.1.3-1`	not yet assigned	Not reported	[892252]
Opensuse	python-bleach	rpm	tumbleweed	`6.4.0-1.1`	Not reported	OPENSUSE-SU-2026:11323-1	Not reported
Ubuntu	python-bleach	deb	pro	`2.1.2-1ubuntu0.1~esm1`	Not reported	UBUNTU-CVE-2018-7753	Not reported
Opensuse	python-bleach	rpm	tumbleweed	`6.1.0-1.5`	Not reported	OPENSUSE-SU-2024:14134-1	Not reported

[Debian bug #892252]

OpenFactory catalog packages

[openSUSE Tumbleweed]

[python313-bleach]Unknown
Source package: [python-bleach]
Details (1)
- 6.4.0-1.1 · noarch · tumbleweed
  Unknown · Fixed: 6.1.0-1.5, 6.4.0-1.1
  Version impact unknown
  dsa · python-bleach · opensuse · tumbleweed
[python314-bleach]Unknown
Source package: [python-bleach]
Details (1)
- 6.4.0-1.1 · noarch · tumbleweed
  Unknown · Fixed: 6.1.0-1.5, 6.4.0-1.1
  Version impact unknown
  dsa · python-bleach · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[python3-bleach]Fixed
Source package: [python-bleach]
Details (2)
- 5.0.1-2 · all · bookworm
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · bookworm; dsa · python-bleach · debian · 12
- 5.0.1-2 · all · bookworm
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · bookworm; dsa · python-bleach · debian · 12
[python-bleach-doc]Fixed
Source package: [python-bleach]
Details (2)
- 5.0.1-2 · all · bookworm
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · bookworm; dsa · python-bleach · debian · 12
- 5.0.1-2 · all · bookworm
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · bookworm; dsa · python-bleach · debian · 12

[Debian 13 (Trixie)]

[python3-bleach]Fixed
Source package: [python-bleach]
Details (2)
- 6.2.0-1 · all · trixie
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · 13
- 6.2.0-1 · all · trixie
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · 13
[python-bleach-doc]Fixed
Source package: [python-bleach]
Details (2)
- 6.2.0-1 · all · trixie
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · 13
- 6.2.0-1 · all · trixie
  Fixed · Fixed: 2.1.3-1
  dsa · python-bleach · debian · 13

Observed: Oct 23, 2026, 5:37:46 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]