{"id":"CVE-2021-23434","aliases":["CLSA-2026-1774830277","DEBIAN-CVE-2021-23434","DLA-3291-1","EUVD-2021-2112","GHSA-v39p-96qg-c8rf","UBUNTU-CVE-2021-23434","USN-5967-1"],"status":"published","title":"Prototype Pollution","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","severity":{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01902,"percentile":0.79991,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-843"],"published":"2021-08-27T16:50:13Z","modified":"2026-10-23T18:04:50Z","fixes":[{"ecosystem":"npm","package":"object-path","fixed_in":["0.11.6"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"node-object-path","fixed_in":["0.11.7-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"node-object-path","fixed_in":["0.11.7-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"node-object-path","fixed_in":["0.11.7-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"node-object-path","fixed_in":["0.11.3-1ubuntu0.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"node-object-path","fixed_in":["0.11.4-2ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.6"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.11.4-tuxcare.0"},{"fixed":"0.11.4-tuxcare.1"}]}],"versions":["0.11.4"],"bundled":3},{"source":"osv","ecosystem":"Debian:12","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.7-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.7-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.7-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.4-2+deb10u2"}]}],"versions":["0.11.4-2","0.11.4-2+deb10u1"],"bundled":2},{"source":"osv","ecosystem":"npm","package":"object-path","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.11.6"}]}]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.3-1ubuntu0.1"}]}],"versions":["0.11.3-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.4-2ubuntu0.1"}]}],"versions":["0.11.4-2"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.8+~0.11.1-2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.8+~0.11.1-2"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.8+~0.11.4-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.11.8+~0.11.1-2","0.11.8+~0.11.4-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.3-1ubuntu0.1"}]}],"versions":["0.11.3-1"],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"node-object-path","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.4-2ubuntu0.1"}]}],"versions":["0.11.4-2"],"bundled":3}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"mariocasciaro","product":"object-path"},{"vendor":"object-path_project","product":"object-path"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453","tags":["x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423","tags":["x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb","tags":["x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://github.com/mariocasciaro/object-path%230116","tags":["x_transferred","Broken Link","package","web","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/01/msg00031.html","tags":["mailing-list","x_transferred","Mailing List","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-23434","tags":["advisory"]},{"url":"https://github.com/mariocasciaro/object-path#0116","tags":["web"]},{"url":"https://github.com/advisories/GHSA-v39p-96qg-c8rf"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-23434","tags":["advisory"]},{"url":"https://github.com/mariocasciaro/object-path","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-23434","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5967-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-23434","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2020-15256","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2021-3805","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-23434","title":"Prototype Pollution","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T16:50:13.019Z","modified":"2024-09-16T16:48:40.22Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:00.819444Z"}],"euvd":[{"id":"EUVD-2021-2112","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T16:50:13Z","modified":"2024-09-16T16:48:40Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T00:55:48.234114Z"}],"ghsa":[{"id":"GHSA-v39p-96qg-c8rf","title":"Prototype Pollution in object-path","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition `currentPath === '__proto__'` returns false if `currentPath` is `['__proto__']`. This is because the `===` operator returns always false when the type of the operands is different.","status":"published","published":"2021-09-01T18:37:11Z","modified":"2023-09-08T21:25:44Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-843","CWE-1321"],"updated_at":"2026-11-02T14:37:03.287418Z"}],"nvd":[{"id":"CVE-2021-23434","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T17:15:06.91Z","modified":"2026-06-17T03:38:45.38Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T14:06:57.67549Z"}],"osv":[{"id":"CVE-2021-23434","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T17:15:06.91Z","modified":"2026-10-20T10:54:32.252112097Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.367807Z"},{"id":"DEBIAN-CVE-2021-23434","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T17:15:06.91Z","modified":"2026-10-23T18:04:50.039092309Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:34.637046Z"},{"id":"GHSA-v39p-96qg-c8rf","title":"Prototype Pollution in object-path","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition `currentPath === '__proto__'` returns false if `currentPath` is `['__proto__']`. This is because the `===` operator returns always false when the type of the operands is different.","status":"published","published":"2021-09-01T18:37:11Z","modified":"2025-01-14T09:11:55.900225Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-1321","CWE-843"],"updated_at":"2026-11-02T15:46:56.639206Z"},{"id":"UBUNTU-CVE-2021-23434","description":"This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.","status":"published","published":"2021-08-27T17:15:00Z","modified":"2026-10-17T12:55:24.289663283Z","cvss":[{"version":"3.1","score":5.6,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"CLSA-2026-1774830277","title":"TuxCare security update for object-path (3 CVEs)","description":"TuxCare rebuilt object-path to address 3 CVEs. Fixed in 0.11.4-tuxcare.1.","status":"published","published":"2026-08-04T14:52:16Z","modified":"2026-10-15T09:45:09.087205591Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"DLA-3291-1","title":"node-object-path - security update","status":"published","published":"2023-01-29T00:00:00Z","modified":"2026-03-09T01:22:40.871829Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"USN-5967-1","title":"node-object-path vulnerabilities","description":"It was discovered that the set() method in object-path could be corrupted\nas a result of prototype pollution by sending a message to the parent\nprocess. An attacker could use this issue to cause object-path to crash.\n(CVE-2020-15256, CVE-2021-23434, CVE-2021-3805)\n","status":"published","published":"2023-03-22T00:07:34Z","modified":"2026-04-27T16:47:20.47199347Z","updated_at":"2026-11-02T16:58:16.738762Z"}]}}