How severe is GHSA-48wp-p9qv-4j64?

No CVSS score has been assigned to GHSA-48wp-p9qv-4j64 yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-48wp-p9qv-4j64?

GHSA-48wp-p9qv-4j64 affects the following packages: commonmarker (RubyGems). Ecosystems affected: RubyGems.

How do I fix GHSA-48wp-p9qv-4j64?

Update commonmarker to 0.23.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-48wp-p9qv-4j64 is resolved across your whole dependency graph.

How do I detect GHSA-48wp-p9qv-4j64 in my RubyGems dependencies?

Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for commonmarker, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

How do I mitigate GHSA-48wp-p9qv-4j64 if there is no patch (or I can't update yet)?

Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Is GHSA-48wp-p9qv-4j64 actively exploited in the wild?

No public exploit code has been indexed for GHSA-48wp-p9qv-4j64 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

When was GHSA-48wp-p9qv-4j64 published, and has it been updated?

GHSA-48wp-p9qv-4j64 was published on April 11, 2023 and was last updated on December 4, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

💎 RubyGems

Not in CISA KEV

Commonmarker vulnerable to to several quadratic complexity bugs that may lead to denial of serviceGHSA-48wp-p9qv-4j64

Fix: gjtorikian/commonmarker#236

GHSA-48wp-p9qv-4j64 is a security vulnerability in commonmarker. A fix is available for commonmarker — see the affected versions and patch details below.

Published

Apr 11, 2023

Updated

Dec 4, 2024

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Dec 4, 2024 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

💎commonmarker

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.

Description

Impact

Several quadratic complexity bugs in commonmarker's underlying cmark-gfm library may lead to unbounded resource exhaustion and subsequent denial of service.

The following vulnerabilities were addressed:

For more information, consult the release notes for version 0.23.0.gfm.10 and 0.23.0.gfm.11.

Mitigation

Users are advised to upgrade to commonmarker version 0.23.9.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
💎RubyGems	`commonmarker`	all versions	0.23.9`bundle update commonmarker --conservative`

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for commonmarker, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update commonmarker to 0.23.9 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-48wp-p9qv-4j64 is resolved across your whole dependency graph.
Workarounds
Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Frequently Asked Questions

## Impact Several quadratic complexity bugs in commonmarker's underlying [`cmark-gfm`](https://github.com/github/cmark-gfm) library may lead to unbounded resource exhaustion and subsequent denial of service. The following vulnerabilities were addressed: * [CVE-2023-24824](https://github.com/github/cmark-gfm/security/advisories/GHSA-66g8-4hjf-77xh) * [CVE-2023-26485](https://github.com/github/cmark-gfm/security/advisories/GHSA-r8vr-c48j-fcc5) For more information, consult the release notes for version [`0.23.0.gfm.10`](https://github.com/github/cmark-gfm/releases/tag/0.29.0.gfm.10) and [`0.

O3 Security · Impact-Aware SCA

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