CVE-2022-24724

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under NVD CVSS v3. EPSS exploit probability: 4.2%, top 10% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Elevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 5%CVSS: 8.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
5%
EPSS %ILE
91%
KEV
Not listed

Published

March 3, 2022

Last Modified

November 21, 2024

Advisory Details (8)

Auto-updated Aug 26, 2026
Patch available. Sources: github.
github Patch Available

Integer overflow in table parsing extension leads to heap memory corruption · Advisory · github/cmark-gfm · GitHub

https://github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
generic

Packet Storm Security

http://packetstormsecurity.com/files/166599/cmark-gfm-Integer-overflow.html
generic

[SECURITY] Fedora 34 Update: ghostwriter-2.1.2-1.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z55K6VNVKO2G5SNKRCQ2KDG5SKTX5PVV/
generic

[SECURITY] Fedora 35 Update: ghostwriter-2.1.2-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TJBFIJEHJZEEDG6MO4MQHZYKUXELH77O/
generic

[SECURITY] Fedora 36 Update: ghc-cmark-gfm-0.2.3-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSKUOJ2VAYGTJXPDE2RRPMNLVVMKCI77/
generic

[SECURITY] Fedora 34 Update: pandoc-citeproc-0.17.0.1-5.fc34 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KH4UQA6VWVZU5EW3HNEAB7D7BTCNJSJ2/
generic

[SECURITY] Fedora 35 Update: ghc-cmark-gfm-0.2.3-1.fc35 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7V3HAM5H6YFJG2QFEXACZR3XVWFTXTC/
generic

[SECURITY] Fedora 36 Update: ghostwriter-2.1.2-1.fc36 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5CYUU662VO6CCXQKVZVOHXX3RGIF2DLQ/

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatpandoc-0:2.0.6-6.el8_62022-07-18redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(19 across 4 ecosystems)
Debian:12(5)
PackageVulnerable rangeFixed inDependents
cmark-gfm—0.29.0.gfm.3-3—
ghostwriter—2.1.6+ds-1—
python-cmarkgfm—0.7.0-1—
r-cran-commonmark—1.8.0-1—
ruby-commonmarker—0.23.4-1—
Debian:13(5)
PackageVulnerable rangeFixed inDependents
cmark-gfm—0.29.0.gfm.3-3—
ghostwriter—2.1.6+ds-1—
python-cmarkgfm—0.7.0-1—
r-cran-commonmark—1.8.0-1—
ruby-commonmarker—0.23.4-1—
Debian:14(5)
PackageVulnerable rangeFixed inDependents
cmark-gfm—0.29.0.gfm.3-3—
ghostwriter—2.1.6+ds-1—
python-cmarkgfm—0.7.0-1—
r-cran-commonmark—1.8.0-1—
ruby-commonmarker—0.23.4-1—
Debian:11(4)
PackageVulnerable rangeFixed inDependents
cmark-gfm0.29.0.gfm.0-6 ... 0.29.0.gfm.6-6 (16 versions)——
python-cmarkgfm0.4.2-1 ... 2025.10.22-2 (8 versions)——
r-cran-commonmark1.7-2 ... 2.0.0-2 (10 versions)——
ruby-commonmarker0.21.0-1 ... 2.8.3-1 (11 versions)——

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-09-20 20:13 UTCEPSS rescore
  2. 2026-09-20 04:35 UTCOSV refresh
  3. 2026-09-17 19:23 UTCEPSS rescore
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-24724?
CVE-2022-24724 is a high vulnerability published on March 3, 2022. 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:rowfromstring may lead to heap memory corruption when parsing tables who's marker rows contain more…
When was CVE-2022-24724 disclosed?
CVE-2022-24724 was first published in the National Vulnerability Database on March 3, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-24724 actively exploited?
CVE-2022-24724 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5% probability of exploitation in the next 30 days, which ranks it in the top 8.9% of all scored CVEs.
What is the CVSS score of CVE-2022-24724?
CVE-2022-24724 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2022-24724?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-24724, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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