CVE-2026-59870
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Wykryto nadmierne zużycie CPU w js-yaml przy przetwarzaniu złośliwych dokumentów YAML.
CVSS
7.5
EPSS
0.6%
Exploit
poc
Vendor
nodeca
Opis źródłowy (NVD)
js-yaml is a JavaScript YAML parser and dumper. Prior to 3.15.1, 4.3.1, and 5.2.1, YAML11_SCHEMA support for the !!omap tag in src/tag/sequence/omap.ts uses omapTag.addItem() to perform a linear duplicate-key scan on every insertion, causing O(n^2) CPU consumption when yaml.load() parses a crafted ordered-map document. In v3 and v4, !!omap is active and exploitable by default. v5 doesn't use !!omap by default, and the chances of activating it are very low.This issue is fixed in 3.15.1, 4.3.1, and 5.2.1.
exploit
Brak patcha
Źródła i daty
| Źródło | Wartość |
|---|---|
| NVD – CVSS | 7.5 |
| CISA KEV (aktywnie wykorzystywane) | Nie |
| FIRST EPSS (prawdopodobieństwo exploita) | 0.6% |
| Opublikowano (NVD) | 2026-07-08 16:16:33 UTC |
| Ostatnia modyfikacja (NVD) | 2026-10-06 16:17:08 UTC |
Referencje
- https://github.com/nodeca/js-yaml/commit/22a8071ef032117bc6249c330b240ac3aa2d3ded ([email protected])
- https://github.com/nodeca/js-yaml/commit/39f3211a2f01b3c6982710cf21434ab7060acefe ([email protected]) [Patch]
- https://github.com/nodeca/js-yaml/commit/c3cc4b0bb9ddb9af2dd9b61e0d56f5ce7983cd4a ([email protected])
- https://github.com/nodeca/js-yaml/releases/tag/3.15.1 ([email protected])
- https://github.com/nodeca/js-yaml/releases/tag/4.3.1 ([email protected])
- https://github.com/nodeca/js-yaml/releases/tag/5.2.1 ([email protected]) [Release Notes]
- https://github.com/nodeca/js-yaml/security/advisories/GHSA-724g-mxrg-4qvm ([email protected]) [Exploit, Vendor Advisory]