CVE-2021-21291
unknown
CVSS v3
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CVSS v4 NEW
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VIR risk
—
Description
Subdomain checking of whitelisted domains could allow unintended redirects in oauth2-proxy in github.com/oauth2-proxy/oauth2-proxy
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/oauth2-proxy/oauth2-proxy/v7 | <7.0.0 | 7.0.0 |
| Go | github.com/oauth2-proxy/oauth2-proxy | <=3.2.0 | |
| Go | github.com/oauth2-proxy/oauth2-proxy | | |
References
- https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-4mf2-f3wh-gvf2
- https://nvd.nist.gov/vuln/detail/CVE-2021-21291
- https://github.com/oauth2-proxy/oauth2-proxy/commit/780ae4f3c99b579cb2ea9845121caebb6192f725
- https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.0.0
- https://pkg.go.dev/github.com/oauth2-proxy/oauth2-proxy/v7
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.