{"id":"GHSA-8fv2-88gg-hm7q","summary":"Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock","details":"Vulnerability report without repro case. Repro case may be added later after harness is complete.\n\n**Preconditions (4):**\n- Pod-network reachability to :18002 (no auth)\n- Tenant can create EnvoyExtensionPolicy (baseline)\n- Attacker pod floods GET while churning EnvoyExtensionPolicy with distinct Wasm URLs\n- Read at :153 must overlap a write at :201/:209 (probabilistic, attacker controls both rates)\n\n**Description:**\n\nhttpserver.go:153 reads s.mappingPath2Cache with no lock while httpserver.go:201/209 write it under s.Lock(); the struct uses a plain map. Writer is tenant-reachable via EnvoyExtensionPolicy translation, reader is pod-network-reachable on :18002 with per-request goroutines. Go's concurrent map read+write detection calls runtime.throw, which net/http's per-conn recover cannot catch, so the controller process exits — cross-tenant control-plane DoS. Capped at MEDIUM: DoS-only, k8s restarts pod, timing-dependent trigger.","aliases":["BIT-envoy-gateway-2026-53715","CVE-2026-53715","GO-2026-6005"],"modified":"2026-09-21T09:40:43.531076298Z","published":"2026-07-16T19:21:15Z","database_specific":{"github_reviewed_at":"2026-07-16T19:21:15Z","nvd_published_at":null,"cwe_ids":["CWE-362"],"severity":"MODERATE","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/envoyproxy/gateway/security/advisories/GHSA-8fv2-88gg-hm7q"},{"type":"PACKAGE","url":"https://github.com/envoyproxy/gateway"}],"affected":[{"package":{"name":"github.com/envoyproxy/gateway","ecosystem":"Go","purl":"pkg:golang/github.com/envoyproxy/gateway"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.8.0-rc.0"},{"fixed":"1.8.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-8fv2-88gg-hm7q/GHSA-8fv2-88gg-hm7q.json"}},{"package":{"name":"github.com/envoyproxy/gateway","ecosystem":"Go","purl":"pkg:golang/github.com/envoyproxy/gateway"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.7.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-8fv2-88gg-hm7q/GHSA-8fv2-88gg-hm7q.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}