DEBIAN-CVE-2026-84375
- Source
- https://security-tracker.debian.org/tracker/CVE-2026-84375
- Import Source
- https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-84375.json
- JSON Data
- https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-84375
- Upstream
- Published
- 2026-09-01T22:17:19Z
- Modified
- 2026-09-29T08:47:35Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 until 3.15.2, 4.3.2, and 5.4.1, maxTotalMergeKeys in lib/js-yaml/loader.js and lib/loader.js does not count empty mapping sources while processing the merge key <<. An attacker can alias a large sequence of empty mappings into many merge targets, causing O(N * K) processing while totalMergeKeys remains unchanged and the configured resource limit is never reached. A relatively small YAML document can therefore cause prolonged CPU consumption in applications that parse untrusted YAML, and merge processing is enabled by default on these release lines. In v3 & v4, merge is enabled by default so the severity score is higher. This issue is fixed in versions 3.15.2, 4.3.2, and 5.4.1.
- References
Affected packages
Debian:12 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=bookworm
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:13 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=trixie
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Debian:14 / node-js-yaml
Package
- Name
- node-js-yaml
- Purl
- pkg:deb/debian/node-js-yaml?arch=source&distro=forky