Nixpkgs security tracker
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CVE-2025-64718
5.3 MEDIUM
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): None (N)
- User Interaction (UI): None (N)
- Scope (S): Unchanged (U)
- Confidentiality (C): None (N)
- Integrity (I): Low (L)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): None (N)
- Modified Scope (MS): Unchanged (U)
- Modified Integrity (MI): Low (L)
- Modified Availability (MA): None (N)
Activity log
- Created suggestion
js-yaml has prototype pollution in merge (<<)
js-yaml is a JavaScript YAML parser and dumper. In js-yaml 4.1.0 and below, 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. 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).
References
-
https://github.com/nodeca/js-yaml/security/advisories/GHSA-mh29-5h37-fv8m x_refsource_CONFIRM
-
https://github.com/nodeca/js-yaml/issues/730#issuecomment-3549635876 x_refsource_MISC
Affected products
js-yaml
- ==< 4.1.1
- ==>= 4.0.0, < 4.1.1
- ==< 3.14.2
Matching in nixpkgs
pkgs.nodePackages.js-yaml
YAML 1.2 parser and serializer
pkgs.nodePackages_latest.js-yaml
YAML 1.2 parser and serializer