CVE catalog
CVE-2023-24824
cmark-gfm: CVE-2023-24824
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.04% · Oct 25, 2026
cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. A polynomial time complexity issue in cmark-gfm may lead to unbounded resource exhaustion and subsequent denial of service. This CVE covers quadratic complexity issues when parsing text which leads with either large numbers of `>` or `-` characters. This issue has been addressed in version 0.29.0.gfm.10. Users are advised to upgrade. Users unable to upgrade should validate that their input comes from trusted sources.
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 | vulnerable |
| 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 | vulnerable |
| 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 | vulnerable |
| 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 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | cmark-gfm | source | sid | 0.29.0.gfm.13-1 | not yet assigned | Not reported | [1034171] |
| Debian | cmark-gfm | source | forky | 0.29.0.gfm.13-1 | not yet assigned | Not reported | [1034171] |
| Debian | cmark-gfm | source | trixie | 0.29.0.gfm.13-1 | not yet assigned | Not reported | [1034171] |
| Debian | cmark-gfm | source | bookworm | (unfixed) | not yet assigned | Not reported | [1034171] |
| Debian | python-cmarkgfm | source | sid | 2024.11.20-1 | not yet assigned | Not reported | [1034172] |
| Debian | python-cmarkgfm | source | forky | 2024.11.20-1 | not yet assigned | Not reported | [1034172] |
| Debian | python-cmarkgfm | source | trixie | 2024.11.20-1 | not yet assigned | Not reported | [1034172] |
| Debian | python-cmarkgfm | source | bookworm | (unfixed) | not yet assigned | Not reported | [1034172] |
| Debian | r-cran-commonmark | source | sid | 1.9.1-1 | not yet assigned | Not reported | [1034173] |
| Debian | r-cran-commonmark | source | forky | 1.9.1-1 | not yet assigned | Not reported | [1034173] |
| Debian | r-cran-commonmark | source | trixie | 1.9.1-1 | not yet assigned | Not reported | [1034173] |
| Debian | r-cran-commonmark | source | bookworm | (unfixed) | not yet assigned | Not reported | [1034173] |
| Debian | ruby-commonmarker | source | sid | 0.23.10-1 | not yet assigned | Not reported | [1034174] |
| Debian | ruby-commonmarker | source | forky | 0.23.10-1 | not yet assigned | Not reported | [1034174] |
| Debian | ruby-commonmarker | source | trixie | 0.23.10-1 | not yet assigned | Not reported | [1034174] |
| Debian | ruby-commonmarker | source | bookworm | (unfixed) | not yet assigned | Not reported | [1034174] |
[Debian bug #1034171][Debian bug #1034172][Debian bug #1034173][Debian bug #1034174]
Notes
[bookworm] cmark-gfm: Minor issue [bookworm] python-cmarkgfm: Minor issue [bookworm] r-cran-commonmark: Minor issue [bookworm] ruby-commonmarker: Minor issue
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2025_8427.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-24824]
- [https://security-tracker.debian.org/tracker/CVE-2023-24824]
- [https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-24824.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-1213.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]