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CVE-2025-2792 @mozilla/readability

Fix: mozilla/readability@1c4d63b

CVE-2025-2792 is a security vulnerability in @mozilla/readability. A fix is available for @mozilla/readability — see the affected versions and patch details below.

@mozilla/readability Denial of Service through Regex

Published
Mar 26, 2025
Updated
Mar 26, 2025
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Mar 26, 2025 · 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.

1Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream
@mozilla/readabilitynpm
2.3Mdownloads / week

Description

Specially crafted titles may have caused a regular expression to excessively backtrack and cause a local denial of service.

Additional Details are available at Bugzilla

Credit: DayShift

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npm@mozilla/readabilityall versions0.6.0npm install @mozilla/readability@0.6.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update @mozilla/readability to 0.6.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-2792 is resolved across your whole dependency graph.

  3. 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.

  4. How O3 protects you

    O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like CVE-2025-2792 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2025-2792. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

Specially crafted titles may have caused a regular expression to excessively backtrack and cause a local denial of service. Additional Details are [available at Bugzilla](https://bugzilla.mozilla.org/show_bug.cgi?id=1948833) Credit: DayShift
O3 Security · Impact-Aware SCA

Is CVE-2025-2792 in your dependencies?

O3 Security finds CVE-2025-2792 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

CVE-2025-2792: @mozilla/readability DoS | O3 Security