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CVE-2026-34457

OAuth2 Proxy is a reverse proxy that provides authentication using OAuth2 providers. Versions prior to 7.15.2 contain a configuration-dependent authentication bypass in deployments where OAuth2 Proxy is used with an auth_request-style integration (such as nginx auth_request) and either --ping-user-agent is set or --gcp-healthchecks is enabled. In affected configurations, OAuth2 Proxy treats any request with the configured health check User-Agent value as a successful health check regardless of t
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a0c6e6ef8fd9a084215ced7dd16435ef31dd9e1b0728c9e1a41777deeacb3e95
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"oauth2-proxy","vendor":"oauth2-proxy","versions":[{"status":"affected","version":"< 7.15.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:b855707c02130fcb2324ddbcd8a41fa2367a3798df65d9dd454c52c1966a04a4 · sha256:66eb14e9d0c0fa0a… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:b855707c02130fcb2324ddbcd8a41fa2367a3798df65d9dd454c52c1966a04a4 · sha256:66eb14e9d0c0fa0a… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-290","description":"CWE-290: Authentication Bypass by Spoofing","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:b855707c02130fcb2324ddbcd8a41fa2367a3798df65d9dd454c52c1966a04a4 · sha256:66eb14e9d0c0fa0a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2","tags":["x_refsource_MISC"],"url":"https://github.com/oauth2-proxy/oauth2-proxy/releases/tag/v7.15.2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b855707c02130fcb2324ddbcd8a41fa2367a3798df65d9dd454c52c1966a04a4 · sha256:66eb14e9d0c0fa0a… · /containers/cna/references/1
{"name":"https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-5hvv-m4w4-gf6v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/oauth2-proxy/oauth2-proxy/security/advisories/GHSA-5hvv-m4w4-gf6v"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:b855707c02130fcb2324ddbcd8a41fa2367a3798df65d9dd454c52c1966a04a4 · sha256:66eb14e9d0c0fa0a… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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