CVE-2025-64718Patch(nodeca / js-yaml)

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch nodeca js-yaml systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

js-yaml is a JavaScript YAML parser and dumper. In js-yaml before 4.1.1 and 3.14.2, it's possible for an attacker to modify the prototype of the result of a parsed yaml document via prototype pollution (`__proto__`). All users who parse untrusted yaml documents may be impacted. The problem is patched in js-yaml 4.1.1 and 3.14.2. Users can protect against this kind of attack on the server by using `node --disable-proto=delete` or `deno` (in Deno, pollution protection is on by default).

0.5/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-1321

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • js-yaml

Threat summary

  • Patch or workaround signal is available
  • 1 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 1 signal
  • 1 total mentions across 1 day

Affected systems

Vendors
Products
js-yaml

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-03-17: 1Patch / Workaround · 2026-03-17: 1Technical Details · 2026-03-17: 103-17
Signal classification1 categories
Patch
1100.0%
Referenced assets1 URL
Full discourse1 post
  • ThreatCluster@threatcluster
    Patch

    Fedora ships nodejs and yarnpkg updates resolving js-yaml prototype pollution CVE-2025-64718 on Fedora 42-43, released Mar 7 2026; admins should update via dnf. #Vulnerability https://threatcluster.io/cluster/fedora-updates-address-js-yaml-prototype-pollution-vulnerabi-1443cb46

    Post summary

    Fedora releases updates for nodejs and yarnpkg to fix the js‑yaml prototype pollution vulnerability (CVE‑2025‑64718); administrators should apply the patch via dnf.

    00010105
    103 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appnodecajs-yaml-node.js-

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