{"id":"CVE-2020-26294","aliases":["GHSA-gv2h-gf8m-r68j","GO-2022-0838"],"url":"https://o3.security/vulnerability/CVE-2020-26294","summary":"Exposure of server configuration in github.com/go-vela/server","details":"### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\n* The ability to expose configuration set in the [Vela server](https://github.com/go-vela/server) via [pipeline template functionality](https://go-vela.github.io/docs/templates/overview/).\n* It impacts all users of Vela.\n\n\nSample of template exposing server configuration [using Sprig's `env` function](http://masterminds.github.io/sprig/os.html):\n\n```yaml\nmetadata:\n  template: true\n\nsteps:\n  - name: sample\n    image: alpine:latest\n    commands:\n      # OAuth client ID for Vela <-> GitHub communication\n      - echo {{ env \"VELA_SOURCE_CLIENT\" }}\n      # secret used for server <-> worker communication\n      - echo {{ env \"VELA_SECRET\" }}\n```\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\n* Upgrade to `0.6.1`\n\n#### Additional Recommended Action(s)\n\n* Rotate all secrets\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\n* No\n\n### For more information\n\nIf you have any questions or comments about this advisory:\n\n* Email us at [vela@target.com](mailto:vela@target.com)","published":"2021-01-04T19:15:15.110Z","modified":"2026-07-09T01:07:43.770219Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"epss":{"score":0.01777,"percentile":0.76178,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Go","name":"github.com/go-vela/compiler","fixedVersion":"0.6.1"}],"fix":{"url":"https://github.com/go-vela/compiler/commit/f1ace5f8a05c95c4d02264556e38a959ee2d9bda","label":"go-vela/compiler@f1ace5f"},"references":[{"type":"ADVISORY","url":"https://pkg.go.dev/github.com/go-vela/compiler/compiler"},{"type":"FIX","url":"https://github.com/go-vela/compiler/commit/f1ace5f8a05c95c4d02264556e38a959ee2d9bda"},{"type":"EVIDENCE","url":"https://github.com/go-vela/compiler/security/advisories/GHSA-gv2h-gf8m-r68j"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26294"},{"type":"WEB","url":"https://github.com/helm/helm/blob/6297c021cbda1483d8c08a8ec6f4a99e38be7302/pkg/engine/funcs.go#L46-L47"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:07:43.770219Z"}}