js-yaml is a JavaScript YAML parser and dumper. From 3.0.0 before 3.15.0 and from 4.0.0 before 4.3.0, js-yaml can spend quadratic CPU time parsing a document whose size grows only linearly when a chain of mappings uses merge keys where each mapping merges the previous one. This issue is fixed in versions 3.15.0 and 4.3.0.
Weakness
An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Js-yaml | Nodeca | 3.0.0 (including) | 3.15.0 (excluding) |
| Js-yaml | Nodeca | 4.0.0 (including) | 4.3.0 (excluding) |
| Red Hat Hardened Images | RedHat | nodejs26-main-26.4.0-1.4.hum1 | * |
| Red Hat Hardened Images | RedHat | nodejs25-main-25.9.0-1.3.hum1 | * |
| Red Hat Hardened Images | RedHat | dotnet8-0-main-8.0.128-1.1.hum1 | * |
| Red Hat Hardened Images | RedHat | rust-main-1.97.0-1.1.hum1 | * |
| Red Hat Hardened Images | RedHat | nodejs24-main-24.18.0-0.3.hum1 | * |
| Red Hat Hardened Images | RedHat | nodejs22-main-22.23.1-2.1.hum1 | * |
| Node-js-yaml | Ubuntu | questing | * |
References
- https://github.com/nodeca/js-yaml/commit/24f13e79ee1343a7e30bd6f6c9d9cdbf0ac9b2b7
- https://github.com/nodeca/js-yaml/commit/59423c6f8cdc78742ac00e25a4dd39ef16b702e4
- https://github.com/nodeca/js-yaml/releases/tag/3.15.0
- https://github.com/nodeca/js-yaml/releases/tag/4.3.0
- https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m
- https://github.com/nodeca/js-yaml/security/advisories/GHSA-52cp-r559-cp3m