{"id":"CVE-2025-13204","aliases":["CLSA-2026-1774830287","EUVD-2025-197614","GHSA-8gw3-rxh4-v6jx","RHSA-2026:0140","ROOT-APP-NPM-CVE-2025-13204"],"status":"published","title":"CVE-2025-13204","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00851,"percentile":0.58645,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2025-11-14T17:02:39Z","modified":"2026-11-01T02:30:16Z","fixes":[{"ecosystem":"npm","package":"expr-eval-fork","fixed_in":["2.0.2"],"sources":["ghsa","osv"]},{"ecosystem":"Red Hat:rhel_aus:8.2::appstream","package":"grafana-pcp","fixed_in":["0:1.0.5-5.el8_2"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"expr-eval","fixed_in":["2.0.2-aikido.3","2.0.2-aikido.4"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"@rootio/expr-eval","fixed_in":["2.0.2-root.io.2","2.0.2-root.io.3","2.0.2-root.io.4"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"expr-eval","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.0.2"}]}]},{"source":"ghsa","ecosystem":"npm","package":"expr-eval-fork","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"expr-eval","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.2-tuxcare.0"},{"fixed":"2.0.2-tuxcare.1"}]}],"versions":["2.0.2"],"bundled":2},{"source":"osv","ecosystem":"npm","package":"expr-eval","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"2.0.2"}]}]},{"source":"osv","ecosystem":"npm","package":"expr-eval-fork","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"Red Hat:rhel_aus:8.2::appstream","package":"grafana-pcp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.5-5.el8_2"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"expr-eval","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2-aikido.3"},{"fixed":"2.0.2-aikido.4"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/expr-eval","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.2-root.io.2"},{"fixed":"2.0.2-root.io.3"},{"fixed":"2.0.2-root.io.4"}]}]}],"products":[{"vendor":"silentmatt","product":"expr-eval"},{"vendor":"silentmatt","product":"javascript_expression_evaluator"}],"references":[{"url":"https://www.npmjs.com/package/expr-eval-fork","tags":["Product","web","article"]},{"url":"https://github.com/silentmatt/expr-eval","tags":["Product","package","article"]},{"url":"https://github.com/jorenbroekema/expr-eval","tags":["Product","package","web","article"]},{"url":"https://www.huntr.dev/bounties/1-npm-expr-eval/","tags":["third-party-advisory","Exploit","Third Party Advisory","advisory"]},{"url":"https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py","tags":["Product","web"]},{"url":"https://github.com/silentmatt/expr-eval/pull/252/files","tags":["patch","Issue Tracking","Patch","fix","web"]},{"url":"https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py","tags":["exploit","Product","evidence","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-13204","tags":["advisory"]},{"url":"https://www.huntr.dev/bounties/1-npm-expr-eval","tags":["web"]},{"url":"https://github.com/jorenbroekema/expr-eval/commit/6c475a118643ae0efe012de283e932fb8b74324b","tags":["web"]},{"url":"https://github.com/silentmatt/expr-eval/commit/6e889e0e75c50ac37d70c35388602025650e0c50","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8gw3-rxh4-v6jx"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/13xxx/CVE-2025-13204.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:0140","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2415051","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_0140.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-13204","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-13204","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-13204","title":"CVE-2025-13204","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.","status":"published","published":"2025-11-14T17:02:39.529Z","modified":"2026-10-30T18:06:36.383Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:32:43.10004Z"}],"euvd":[{"id":"EUVD-2025-197614","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.","status":"published","published":"2025-11-14T17:02:39Z","modified":"2026-10-30T18:06:36Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T16:59:03.071815Z"}],"ghsa":[{"id":"GHSA-8gw3-rxh4-v6jx","title":"expr-eval vulnerable to Prototype Pollution","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.","status":"published","published":"2025-11-14T18:31:39Z","modified":"2025-11-17T18:39:20Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:39:08.983925Z"}],"nvd":[{"id":"CVE-2025-13204","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. 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The npm expr-eval-fork package resolves this issue.","status":"published","published":"2025-11-14T17:02:39.529Z","modified":"2026-11-01T02:30:16.538161415Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:46.024537Z"},{"id":"GHSA-8gw3-rxh4-v6jx","title":"expr-eval vulnerable to Prototype Pollution","description":"npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. 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