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Vulnerabilities

CVE-2022-39209 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

cmark-gfm is GitHub's fork of cmark, a CommonMark parsing and rendering library and program in C. In versions prior to 0.29.0.gfm.6 a polynomial time complexity issue in cmark-gfm's autolink extension may lead to unbounded resource exhaustion and subsequent denial of service. Users may verify the patch by running `python3 -c 'print("![l"* 100000 + "\n")' | ./cmark-gfm -e autolink`, which will resource exhaust on unpatched cmark-gfm but render correctly on patched cmark-gfm. This vulnerability has been patched in 0.29.0.gfm.6. Users are advised to upgrade. Users unable to upgrade should disable the use of the autolink extension.

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

👁 NIST CVSS score

NIST: NVD

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://en.wikipedia.org/wiki/Time_complexity	CVE, GitHub, Inc.	Third Party Advisory
https://github.com/github/cmark-gfm/commit/9d57d8a23142b316282bdfc954cb0ecda40a8655	CVE, GitHub, Inc.	Patch Third Party Advisory
https://github.com/github/cmark-gfm/security/advisories/GHSA-cgh3-p57x-9q7q	CVE, GitHub, Inc.	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JIUCZN3PEKUCT2JQYQTYOVIJG2KSD6G7/	CVE, GitHub, Inc.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JMGP65NANDVKPDMXMKYO2ZV2H2HZJY4P/	CVE, GitHub, Inc.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UEAAAI4OULDYQ2TA3HOXH54PC3DCBFZS/	CVE, GitHub, Inc.

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-407	Inefficient Algorithmic Complexity	👁 cwe source acceptance level NIST
CWE-400	Uncontrolled Resource Consumption	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

12 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-39209
NVD Published Date:
09/15/2022
NVD Last Modified:
06/17/2026
Source:
GitHub, Inc.

URL: https://nvd.nist.gov/vuln/detail/CVE-2022-39209

⇱ NVD - CVE-2022-39209

CVE-2022-39209 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

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Change History

CVE Modified by CISA-ADP 6/17/2026 12:57:55 AM

CVE Modified by GitHub, Inc. 6/17/2026 12:57:55 AM

CVE Modified by CVE 11/21/2024 2:17:47 AM

CVE Modified by GitHub, Inc. 5/14/2024 7:19:23 AM

CVE Modified by GitHub, Inc. 11/06/2023 10:50:21 PM

Reanalysis by NIST 7/11/2023 4:54:13 PM

Modified Analysis by NIST 1/20/2023 7:34:33 AM

CVE Modified by GitHub, Inc. 11/14/2022 10:15:26 AM

Modified Analysis by NIST 11/08/2022 8:43:56 AM

CVE Modified by GitHub, Inc. 11/05/2022 3:15:09 PM

CVE Modified by GitHub, Inc. 10/17/2022 3:15:10 PM

Initial Analysis by NIST 9/19/2022 2:02:27 PM

Quick Info