{"id":"CVE-2021-29652","aliases":["GHSA-fv82-r8qv-ch4v","GO-2022-0827"],"title":"pomerium_signature is not verified in middleware in github.com/pomerium/pomerium","summary":"pomerium_signature is not verified in middleware in github.com/pomerium/pomerium","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","vendor":"pomerium","product":"github.com/pomerium/pomerium","ecosystem":"go","affected":["github.com/pomerium/pomerium >= 0.10.0, < 0.13.4"],"patched":["github.com/pomerium/pomerium 0.13.4"],"published":"2021-05-21","updated":"2026-07-08","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-fv82-r8qv-ch4v","references":[{"url":"https://github.com/pomerium/pomerium/security/advisories/GHSA-fv82-r8qv-ch4v"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29652"},{"url":"https://github.com/pomerium/pomerium/pull/2048"}],"tags":["osv","go"],"epss":0.00658,"epssPercentile":0.49711,"ingestedAt":"2026-07-09T18:56:36.360Z","slug":"CVE-2021-29652","body":"## Overview\n\n### Impact\nSome API endpoints under /.pomerium/ do not verify parameters with pomerium_signature. This could allow modifying parameters intended to be trusted to Pomerium. \n\nThe issue mainly affects routes responsible for sign in/out, but does not introduce an authentication bypass.\n\n### Specific Go Packages Affected\ngithub.com/pomerium/pomerium/authenticate\n\n### Patches\nPatched in v0.13.4\n\n### For more information\nIf you have any questions or comments about this advisory\n* Open an issue in [pomerium](http://github.com/pomerium/pomerium)\n* Email us at [security@pomerium.com](mailto:security@pomerium.com)\n\n## Affected packages\n\n- `github.com/pomerium/pomerium >= 0.10.0, < 0.13.4`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/pomerium/pomerium 0.13.4`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}