Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2025-64527

Envoy is a high-performance edge/middle/service proxy. In 1.33.12, 1.34.10, 1.35.6, 1.36.2, and earlier, Envoy crashes when JWT authentication is configured with the remote JWKS fetching, allow_missing_or_failed is enabled, multiple JWT tokens are present in the request headers and the JWKS fetch fails. This is caused by a re-entry bug in the JwksFetcherImpl. When the first token's JWKS fetch fails, onJwksError() callback triggers processing of the second token, which calls fetch() again on the
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:964d30fdf87b08721ad733bc47b7fbd9d85f38deb48ad883f164c088bf1ba50a
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"envoy","vendor":"envoyproxy","versions":[{"status":"affected","version":">= 1.36.0, <= 1.36.2"},{"status":"affected","version":">= 1.35.0, <= 1.35.6"},{"status":"affected","version":">= 1.34.0, <= 1.34.10"},{"status":"affected","version":"<= 1.33.12"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7d1e57934b6ffc6a8349f9fc933e7de12b1d3ff772aae5c4de8c220e36982f96 · sha256:e4ea4597ec36566f… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7d1e57934b6ffc6a8349f9fc933e7de12b1d3ff772aae5c4de8c220e36982f96 · sha256:e4ea4597ec36566f… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-476","description":"CWE-476: NULL Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7d1e57934b6ffc6a8349f9fc933e7de12b1d3ff772aae5c4de8c220e36982f96 · sha256:e4ea4597ec36566f… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"name":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-mp85-7mrq-r866","tags":["x_refsource_CONFIRM"],"url":"https://github.com/envoyproxy/envoy/security/advisories/GHSA-mp85-7mrq-r866"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7d1e57934b6ffc6a8349f9fc933e7de12b1d3ff772aae5c4de8c220e36982f96 · sha256:e4ea4597ec36566f… · /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.

← Back to CVE Explorer