{"id":"CVE-2019-10795","aliases":["AZL-44064","EUVD-2022-0772","GHSA-332q-7ff2-57h2","SNYK-JS-UNDEFSAFE-548940"],"status":"published","title":"Prototype Pollution in undefsafe","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","severity":{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01089,"percentile":0.65575,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-74"],"published":"2020-02-18T15:43:13Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"npm","package":"undefsafe","fixed_in":["2.0.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"undefsafe","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.3"}]}]},{"source":"osv","ecosystem":"Azure Linux:3","package":"nodejs-nodemon","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.0.3-5"}]}]},{"source":"osv","ecosystem":"npm","package":"undefsafe","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.0.3"}]}]}],"products":[{"vendor":"snyk","product":"undefsafe"},{"vendor":"undefsafe_project","product":"undefsafe"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-UNDEFSAFE-548940","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/remy/undefsafe/commit/f272681b3a50e2c4cbb6a8533795e1453382c822","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-10795","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-332q-7ff2-57h2"},{"url":"https://github.com/remy/undefsafe","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2019-10795","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","status":"published","published":"2020-02-18T15:43:13Z","modified":"2024-08-04T22:32:02.035Z","updated_at":"2026-11-02T14:20:19.056416Z"}],"euvd":[{"id":"EUVD-2022-0772","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","status":"published","published":"2020-02-18T15:43:13Z","modified":"2024-08-04T22:32:02Z","updated_at":"2026-11-03T02:40:50.763878Z"}],"ghsa":[{"id":"GHSA-332q-7ff2-57h2","title":"Prototype Pollution in undefsafe","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a `__proto__` payload.","status":"published","published":"2022-02-09T22:34:01Z","modified":"2023-02-01T05:05:24Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:36:34.260786Z"}],"nvd":[{"id":"CVE-2019-10795","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","status":"published","published":"2020-02-18T16:15:10.47Z","modified":"2026-06-17T02:11:41.297Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:05:43.875329Z"}],"osv":[{"id":"AZL-44064","title":"CVE-2019-10795 affecting package nodejs-nodemon 2.0.3-5","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","status":"published","published":"2020-02-18T16:15:10Z","modified":"2026-11-05T05:36:30Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-05T16:41:20.107976Z"},{"id":"CVE-2019-10795","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.","status":"published","published":"2020-02-18T16:15:10.47Z","modified":"2026-10-20T10:51:36.059069006Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:10.383287Z"},{"id":"GHSA-332q-7ff2-57h2","title":"Prototype Pollution in undefsafe","description":"undefsafe before 2.0.3 is vulnerable to Prototype Pollution. The 'a' function could be tricked into adding or modifying properties of Object.prototype using a `__proto__` payload.","status":"published","published":"2022-02-09T22:34:01Z","modified":"2026-09-10T03:49:16.69596469Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T15:46:35.050232Z"}]}}