Integer overflow in cmark-gfm table parsing extension leads to heap memory corruption

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.015, the 73rd percentile, on 9 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 4 Jan 2024, 20:27 UTC Confirmed by the CVE List

Sources

• GitHub Advisory Database: GHSA-fmx4-26r3-wxpf
• OSV: GHSA-fmx4-26r3-wxpf
• github.com/github/cmark-gfm/security/advisories/GHSA-mc3g-88wq-6f4x
• github.com/gjtorikian/commonmarker/security/advisories/GHSA-fmx4-26r3-wxpf
• nvd.nist.gov/vuln/detail/CVE-2024-22051
• github.com/gjtorikian/commonmarker/commit/ab4504fd17460627a6ab255bc3c63e8e5fc6aed3
• github.com/gjtorikian/commonmarker
• github.com/rubysec/ruby-advisory-db/blob/master/gems/commonmarker/CVE-2024-22051.yml

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.