How severe is GHSA-ch52-vgq2-943f?

No CVSS score has been assigned to GHSA-ch52-vgq2-943f yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-ch52-vgq2-943f?

GHSA-ch52-vgq2-943f affects the following packages: marked (npm). Ecosystems affected: npm.

How do I fix GHSA-ch52-vgq2-943f?

Update marked to 0.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-ch52-vgq2-943f is resolved across your whole dependency graph.

How do I detect GHSA-ch52-vgq2-943f in my npm dependencies?

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.

How do I mitigate GHSA-ch52-vgq2-943f if there is no patch (or I can't update yet)?

If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

How does O3 Security protect against GHSA-ch52-vgq2-943f?

O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-ch52-vgq2-943f can be triaged on real exposure rather than presence alone.

Is GHSA-ch52-vgq2-943f actively exploited in the wild?

No public exploit code has been indexed for GHSA-ch52-vgq2-943f 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-ch52-vgq2-943f published, and has it been updated?

GHSA-ch52-vgq2-943f was published on September 3, 2020 and was last updated on August 31, 2020. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

📦 npm

Not in CISA KEV

GHSA-ch52-vgq2-943f — marked

GHSA-ch52-vgq2-943f is a security vulnerability in marked. A fix is available for marked — see the affected versions and patch details below.

Regular Expression Denial of Service in marked

Published

Sep 3, 2020

Updated

Aug 31, 2020

Affected

1 pkg

Patched

1 / 1

Exploits

None indexed

Exploitation data as of Aug 31, 2020 · 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.

15Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream

markednpm

55.3Mdownloads / week

Description

Affected versions of marked are vulnerable to Regular Expression Denial of Service (ReDoS). The _label subrule may significantly degrade parsing performance of malformed input.

Recommendation

Upgrade to version 0.7.0 or later.

Affected Packages

1 total 1 fixed

Ecosystem	Package	Vulnerable range	Fix
📦npm	`marked`	≥ 0.4.0&&< 0.7.0	0.7.0`npm install marked@0.7.0`

Detection & mitigation playbook

Open-source dependency

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.
Fix
Update marked to 0.7.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-ch52-vgq2-943f is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-ch52-vgq2-943f can be triaged on real exposure rather than presence alone.

Tailored to GHSA-ch52-vgq2-943f. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Affected versions of `marked` are vulnerable to Regular Expression Denial of Service (ReDoS). The `_label` subrule may significantly degrade parsing performance of malformed input. ## Recommendation Upgrade to version 0.7.0 or later.

O3 Security · Impact-Aware SCA

Is GHSA-ch52-vgq2-943f in your dependencies?

O3 Security finds GHSA-ch52-vgq2-943f across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

Scan my dependencies How O3 SCA works