CVE catalog

CVE-2022-24724

cmark-gfm: CVE-2022-24724

Severity: Critical · CVSS 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Mar 3, 2022, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 4.51% · Oct 25, 2026

cmark-gfm is GitHub's extended version of the C reference implementation of CommonMark. Prior to versions 0.29.0.gfm.3 and 0.28.3.gfm.21, an integer overflow in cmark-gfm's table row parsing `table.c:row_from_string` may lead to heap memory corruption when parsing tables who's marker rows contain more than UINT16_MAX columns. The impact of this heap corruption ranges from Information Leak to Arbitrary Code Execution depending on how and where `cmark-gfm` is used. If `cmark-gfm` is used for rendering remote user controlled markdown, this vulnerability may lead to Remote Code Execution (RCE) in applications employing affected versions of the `cmark-gfm` library. This vulnerability has been patched in the following cmark-gfm versions 0.29.0.gfm.3 and 0.28.3.gfm.21. A workaround is available. The vulnerability exists in the table markdown extensions of cmark-gfm. Disabling the table extension will prevent this vulnerability from being triggered.

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	cmark-gfm	sid	`0.29.0.gfm.13-7.1`	fixed
Debian	cmark-gfm	forky	`0.29.0.gfm.13-7.1`	fixed
Debian	cmark-gfm	trixie	`0.29.0.gfm.13-4`	fixed
Debian	cmark-gfm	bookworm	`0.29.0.gfm.6-6`	fixed
Debian	ghostwriter	sid	`26.04.0+ds-1`	fixed
Debian	ghostwriter	forky	`26.04.0+ds-1`	fixed
Debian	ghostwriter	trixie	`25.04.0+ds-1`	fixed
Debian	ghostwriter	bookworm	`2.1.6+ds-2`	fixed
Debian	python-cmarkgfm	sid	`2025.10.22-2`	fixed
Debian	python-cmarkgfm	forky	`2025.10.22-2`	fixed
Debian	python-cmarkgfm	trixie	`2024.11.20-1`	fixed
Debian	python-cmarkgfm	bookworm	`0.8.0-3`	fixed
Debian	r-cran-commonmark	sid	`2.0.0-3`	fixed
Debian	r-cran-commonmark	forky	`2.0.0-3`	fixed
Debian	r-cran-commonmark	trixie	`1.9.5-1`	fixed
Debian	r-cran-commonmark	bookworm	`1.8.1-1`	fixed
Debian	ruby-commonmarker	sid	`2.10.1-1`	fixed
Debian	ruby-commonmarker	forky	`2.10.0-2`	fixed
Debian	ruby-commonmarker	trixie	`0.23.10-1`	fixed
Debian	ruby-commonmarker	bookworm	`0.23.6-1`	fixed
Ubuntu	cmark-gfm	pro	`0.28.3.gfm.20-3`	vulnerable
Ubuntu	cmark-gfm	pro	`0.29.0.gfm.0-3`	vulnerable
Ubuntu	cmark-gfm	pro	`0.29.0.gfm.0-4`	vulnerable
Ubuntu	cmark-gfm	pro	`0.29.0.gfm.0-4ubuntu0.1~esm1`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	cmark-gfm	source	sid	`0.29.0.gfm.3-3`	not yet assigned	Not reported	[1006756]
Debian	cmark-gfm	source	forky	`0.29.0.gfm.3-3`	not yet assigned	Not reported	[1006756]
Debian	cmark-gfm	source	trixie	`0.29.0.gfm.3-3`	not yet assigned	Not reported	[1006756]
Debian	cmark-gfm	source	bookworm	`0.29.0.gfm.3-3`	not yet assigned	Not reported	[1006756]
Debian	ghostwriter	source	sid	`2.1.6+ds-1`	not yet assigned	Not reported	[1006757]
Debian	ghostwriter	source	forky	`2.1.6+ds-1`	not yet assigned	Not reported	[1006757]
Debian	ghostwriter	source	trixie	`2.1.6+ds-1`	not yet assigned	Not reported	[1006757]
Debian	ghostwriter	source	bookworm	`2.1.6+ds-1`	not yet assigned	Not reported	[1006757]
Debian	python-cmarkgfm	source	sid	`0.7.0-1`	not yet assigned	Not reported	[1006758]
Debian	python-cmarkgfm	source	forky	`0.7.0-1`	not yet assigned	Not reported	[1006758]
Debian	python-cmarkgfm	source	trixie	`0.7.0-1`	not yet assigned	Not reported	[1006758]
Debian	python-cmarkgfm	source	bookworm	`0.7.0-1`	not yet assigned	Not reported	[1006758]
Debian	r-cran-commonmark	source	sid	`1.8.0-1`	not yet assigned	Not reported	[1006760]
Debian	r-cran-commonmark	source	forky	`1.8.0-1`	not yet assigned	Not reported	[1006760]
Debian	r-cran-commonmark	source	trixie	`1.8.0-1`	not yet assigned	Not reported	[1006760]
Debian	r-cran-commonmark	source	bookworm	`1.8.0-1`	not yet assigned	Not reported	[1006760]
Debian	ruby-commonmarker	source	sid	`0.23.4-1`	not yet assigned	Not reported	[1006759]
Debian	ruby-commonmarker	source	forky	`0.23.4-1`	not yet assigned	Not reported	[1006759]
Debian	ruby-commonmarker	source	trixie	`0.23.4-1`	not yet assigned	Not reported	[1006759]
Debian	ruby-commonmarker	source	bookworm	`0.23.4-1`	not yet assigned	Not reported	[1006759]

[Debian bug #1006756][Debian bug #1006757][Debian bug #1006758][Debian bug #1006760][Debian bug #1006759]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[cmark-gfm]Fixed
Details (2)
- 0.29.0.gfm.6-6 · amd64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
- 0.29.0.gfm.6-6 · arm64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
[ghostwriter]Fixed
Details (2)
- 2.1.6+ds-2 · amd64 · bookworm
  Fixed · Fixed: 2.1.6+ds-1
  dsa · ghostwriter · debian · bookworm
- 2.1.6+ds-2 · arm64 · bookworm
  Fixed · Fixed: 2.1.6+ds-1
  dsa · ghostwriter · debian · bookworm
[libcmark-gfm0.29.0.gfm.6]Fixed
Source package: [cmark-gfm]
Details (2)
- 0.29.0.gfm.6-6 · amd64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
- 0.29.0.gfm.6-6 · arm64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
[libcmark-gfm-dev]Fixed
Source package: [cmark-gfm]
Details (2)
- 0.29.0.gfm.6-6 · amd64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
- 0.29.0.gfm.6-6 · arm64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
[libcmark-gfm-extensions0.29.0.gfm.6]Fixed
Source package: [cmark-gfm]
Details (2)
- 0.29.0.gfm.6-6 · amd64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
- 0.29.0.gfm.6-6 · arm64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
[libcmark-gfm-extensions-dev]Fixed
Source package: [cmark-gfm]
Details (2)
- 0.29.0.gfm.6-6 · amd64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
- 0.29.0.gfm.6-6 · arm64 · bookworm
  Fixed · Fixed: 0.29.0.gfm.3-3
  dsa · cmark-gfm · debian · bookworm
[python3-cmarkgfm]Fixed
Source package: [python-cmarkgfm]
Details (2)
- 0.8.0-3 · amd64 · bookworm
  Fixed · Fixed: 0.7.0-1
  dsa · python-cmarkgfm · debian · bookworm
- 0.8.0-3 · arm64 · bookworm
  Fixed · Fixed: 0.7.0-1
  dsa · python-cmarkgfm · debian · bookworm
[r-cran-commonmark]Fixed
Details (2)
- 1.8.1-1 · amd64 · bookworm
  Fixed · Fixed: 1.8.0-1
  dsa · r-cran-commonmark · debian · bookworm
- 1.8.1-1 · arm64 · bookworm
  Fixed · Fixed: 1.8.0-1
  dsa · r-cran-commonmark · debian · bookworm
[ruby-commonmarker]Fixed
Source package: [ruby-commonmarker]
Details (2)
- 0.23.6-1+b1 · amd64 · bookworm
  Fixed · Fixed: 0.23.4-1
  dsa · ruby-commonmarker · debian · bookworm
- 0.23.6-1+b1 · arm64 · bookworm
  Fixed · Fixed: 0.23.4-1
  dsa · ruby-commonmarker · debian · bookworm

Observed: Oct 23, 2026, 6:24:46 PM UTC

References

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