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MEDIUM severity

Marked ReDoS due to email addresses being evaluated in quadratic timeGHSA-xf5p-87ch-gxw2

MEDIUMFix: markedjs/marked#1460

GHSA-xf5p-87ch-gxw2 is a medium-severity (CVSS 5.3) vulnerability in marked. A fix is available for marked — see the affected versions and patch details below.

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Aug 2, 2022 · OSV.dev, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

16Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream
markednpm
126.9Mdownloads / week

Description

Versions of marked from 0.3.14 until 0.6.2 are vulnerable to Regular Expression Denial of Service. Email addresses may be evaluated in quadratic time, allowing attackers to potentially crash the node process due to resource exhaustion.

Recommendation

Upgrade to version 0.6.2 or later.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmmarked≥ 0.3.14&&< 0.6.20.6.2npm install marked@0.6.2

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update marked to 0.6.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xf5p-87ch-gxw2 is resolved across your whole dependency graph.

  3. 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

Versions of `marked` from 0.3.14 until 0.6.2 are vulnerable to Regular Expression Denial of Service. Email addresses may be evaluated in quadratic time, allowing attackers to potentially crash the node process due to resource exhaustion. ## Recommendation Upgrade to version 0.6.2 or later.
O3 Security · Impact-Aware SCA

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Marked ReDoS due to email addresses being evaluated in…