CVE-2026-53715
Envoy Gateway: Wasm cache ServeHTTP reads mappingPath2Cache without lock
描述
Vulnerability report without repro case. Repro case may be added later after harness is complete. **Preconditions (4):** - Pod-network reachability to :18002 (no auth) - Tenant can create EnvoyExtensionPolicy (baseline) - Attacker pod floods GET while churning EnvoyExtensionPolicy with distinct Wasm URLs - Read at :153 must overlap a write at :201/:209 (probabilistic, attacker controls both rates) **Description:** httpserver.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.
如何修補 CVE-2026-53715
要修補 CVE-2026-53715,請將受影響套件升級到下列已修補版本。
- —升級至 1.8.1 或更新版本
- —升級至 1.7.4 或更新版本
CVE-2026-53715 正在被利用嗎?
目前沒有被利用訊號。CVE-2026-53715 既不在 CISA KEV 也沒有最新的 EPSS 分數。
受影響套件(2)
- >= 1.8.0-rc.0, < 1.8.1
- from 0, < 1.7.4, >= 1.8.0-rc.0, < 1.8.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |