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CVE-2025-32014 estree-util-value-to-estr…

Fix: remcohaszing/estree-util-value-to-estree@d0c394f

CVE-2025-32014 is a CWE-1321 vulnerability in estree-util-value-to-estree. A fix is available for estree-util-value-to-estree — see the affected versions and patch details below.

estree-util-value-to-estree allows prototype pollution in generated ESTree

Also known asGHSA-f7f6-9jq7-3rqj
Published
Apr 7, 2025
Updated
Aug 12, 2026
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Sep 19, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2025-32014.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs38th percentile — riskier than 38% of all scored CVEsHighest risk

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

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.

115other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
estree-util-value-to-estreenpm
3.3Mdownloads / week

Description

estree-util-value-to-estree converts a JavaScript value to an ESTree expression. When generating an ESTree from a value with a property named proto, valueToEstree would generate an object that specifies a prototype instead. This vulnerability is fixed in 3.3.3.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmestree-util-value-to-estreeall versions3.3.3npm install estree-util-value-to-estree@3.3.3

Detection & mitigation playbook

Open-source dependency
  1. Detect

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

  2. Fix

    Update estree-util-value-to-estree to 3.3.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2025-32014 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-2025-32014 can be triaged on real exposure rather than presence alone.

Tailored to CVE-2025-32014. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

estree-util-value-to-estree converts a JavaScript value to an ESTree expression. When generating an ESTree from a value with a property named __proto__, valueToEstree would generate an object that specifies a prototype instead. This vulnerability is fixed in 3.3.3.
O3 Security · Impact-Aware SCA

Is CVE-2025-32014 in your dependencies?

O3 Security finds CVE-2025-32014 across npm dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.

CVE-2025-32014: estree-util-value-to-estr… | O3 Security