{"id":"CVE-2021-41087","aliases":["GHSA-vrxp-mg9f-hwf3","GO-2022-0936"],"url":"https://o3.security/vulnerability/CVE-2021-41087","summary":"Improperly Implemented path matching for in-toto-golang","details":"### Impact\nAuthenticated attackers posing as functionaries (i.e., within a trusted set of users for a layout) are able to create attestations that may bypass DISALLOW rules in the same layout. An attacker with access to trusted private keys, may issue an attestation that contains a disallowed artifact by including path traversal semantics (e.g., foo vs dir/../foo).\n\n### Patches\nThe problem has been fixed in version 0.3.0.\n\n### Workarounds\nExploiting this vulnerability is dependent on the specific policy applied.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [in-toto-golang](http://github.com/in-toto/in-toto-golang)\n* Email us at [in-toto-public](mailto:in-toto-public@googlegroups.com)\n* If this is a sensitive security-relevant disclosure, please send a PGP encrypted email to santiagotorres@purdue.edu or jcappos@nyu.edu\n","published":"2021-09-21T21:15:07.203Z","modified":"2026-07-09T12:20:31.874280Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.0043,"percentile":0.36042,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/in-toto/in-toto-golang","fixedVersion":"0.3.0"}],"fix":{"url":"https://github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290","label":"in-toto/in-toto-golang@f2c57d1"},"references":[{"type":"ADVISORY","url":"https://github.com/in-toto/in-toto-golang/security/advisories/GHSA-vrxp-mg9f-hwf3"},{"type":"FIX","url":"https://github.com/in-toto/in-toto-golang/commit/f2c57d1e0f15e3ffbeac531829c696b72ecc4290"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41087"},{"type":"PACKAGE","url":"https://github.com/in-toto/in-toto-golang"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T12:20:31.874280Z"}}