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01 Record

CVE-2023-24824

Quadratic complexity may lead to a denial of service in cmark-gfm

MediumPUBLISHEDCNA: GitHub_M
CNA base score5.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
View raw JSON

02 Description

Quadratic complexity may lead to a denial of service in cmark-gfm

03 Exploitation and scoring

Exploitation
Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.
SSVC decision
  • ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
1.03% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 63.5% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2023-03-31 22:01Z3 YR AGO
Last updated
2025-02-11 17:19Z1 YR AGO
Reserved
2023-01-30
Assigning CNA
GitHub_M
Record state
PUBLISHED
Severity
Medium (CVSS 5.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weaknesses
  • CWE-400Uncontrolled Resource ConsumptionClass
  • CWE-407Inefficient Algorithmic ComplexityClass
  • CWE-1286Improper Validation of Syntactic Correctness of InputBase
Data version
5.1
Document digest
013e8fe5641f844a86eac007466aa7c9256c83a7001e559eb59d4cf931d66e82

05 Affected products

VendorProductVersionsPlatforms
githubcmark-gfm< 0.29.0.gfm.10—

06 References

07 Fixed in

AlmaLinux 8

  • pandoc
    Fixed in 2.0.6-7.el8_10
  • pandoc-common
    Fixed in 2.0.6-7.el8_10

Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

CloudLinux 8

  • pandoc
    Fixed in 2.0.6-7.el8_10
  • pandoc-common
    Fixed in 2.0.6-7.el8_10

Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.

Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.

Debian 12

  • cmark-gfm
    No fix yet
  • python-cmarkgfm
    No fix yet
  • r-cran-commonmark
    No fix yet
  • ruby-commonmarker
    No fix yet

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • cmark-gfm
    Fixed in 0.29.0.gfm.13-1
  • python-cmarkgfm
    Fixed in 2024.11.20-1
  • r-cran-commonmark
    Fixed in 1.9.1-1
  • ruby-commonmarker
    Fixed in 0.23.10-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • cmark-gfm
    Fixed in 0.29.0.gfm.13-1
  • python-cmarkgfm
    Fixed in 2024.11.20-1
  • r-cran-commonmark
    Fixed in 1.9.1-1
  • ruby-commonmarker
    Fixed in 0.23.10-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 18.04 LTS

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 20.04 LTS

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 22.04 LTS

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 24.04 LTS

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 25.10

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.04 LTS

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

Ubuntu 26.10

  • cmark
    No fix yet

Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.