{"action":"Upgrade underscore to 1.13.8 or later.","affected":[{"fixed":"1.13.8","introduced":"0"}],"component":"underscore","cve_ids":["CVE-2026-27601"],"ecosystem":"npm","epss":0.01063,"exploited":false,"fixed_versions":["1.13.8"],"ghsa_id":"GHSA-qpx9-hpmf-5gmw","id":"tcs_01M5KG6SRW5R6VAD2QYKR9F5EF","modified_at":"2026-09-10T03:51:00.752419958Z","published_at":"2026-03-03T17:46:06Z","references":["https://osv.dev/vulnerability/GHSA-qpx9-hpmf-5gmw","https://github.com/jashkenas/underscore/security/advisories/GHSA-qpx9-hpmf-5gmw","https://nvd.nist.gov/vuln/detail/CVE-2026-27601","https://github.com/jashkenas/underscore/issues/3011","https://github.com/jashkenas/underscore/commit/411e222eb0ca5d570cc4f6315c02c05b830ed2b4","https://github.com/jashkenas/underscore/commit/a6e23ae9647461ec33ad9f92a2ecfc220eea0a84","https://github.com/jashkenas/underscore","https://underscorejs.org/#1.13.8","https://underscorejs.org/#flatten","https://underscorejs.org/#isEqual"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GHSA-qpx9-hpmf-5gmw","url":"https://osv.dev/vulnerability/GHSA-qpx9-hpmf-5gmw"}],"summary":"Underscore has unlimited recursion in _.flatten and _.isEqual, potential for DoS attack"}