CVE Explorer
CVE-2025-64718
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).
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"js-yaml","vendor":"nodeca","versions":[{"status":"affected","version":">= 4.0.0, < 4.1.1"},{"status":"affected","version":"< 3.14.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-1321","description":"CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"url":"https://github.com/advisories/GHSA-mh29-5h37-fv8m"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/adp/1/references/0
{"name":"https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879","tags":["x_refsource_MISC"],"url":"https://github.com/nodeca/js-yaml/commit/383665ff4248ec2192d1274e934462bb30426879"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/references/2
{"name":"https://github.com/nodeca/js-yaml/commit/5278870a17454fe8621dbd8c445c412529525266","tags":["x_refsource_MISC"],"url":"https://github.com/nodeca/js-yaml/commit/5278870a17454fe8621dbd8c445c412529525266"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/references/3
{"name":"https://github.com/nodeca/js-yaml/issues/730#issuecomment-3549635876","tags":["x_refsource_MISC"],"url":"https://github.com/nodeca/js-yaml/issues/730#issuecomment-3549635876"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/references/1
{"name":"https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:8b560baad9de9fe3fde70dbba9513c3fd7b2fdf90ed52ff0bd52b7eddb0115e6 · sha256:2dc613c3dc77ad44… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.