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CVE-2026-73513— Envoy: oghttp2 upstream trailers incorrect handling

一分钟漏洞结论

影响对象
envoyproxy envoy
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's optional oghttp2 upstream HTTP/2 codec accepts a response trailer HEADERS frame without END_STREAM. Envoy completes and

CVSS 7.5 · High EPSS 0.72% · P52
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一、 漏洞 CVE-2026-73513 基础信息

漏洞信息

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Vulnerability Title
Envoy: oghttp2 upstream trailers incorrect handling
来源: CVE Program / CVE List V5
Vulnerability Description
Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to 1.36.10, 1.37.6, 1.38.4, and 1.39.1, Envoy's optional oghttp2 upstream HTTP/2 codec accepts a response trailer HEADERS frame without END_STREAM. Envoy completes and deferred-deletes the ActiveRequest while oghttp2 keeps the stream open, leaving ClientStreamImpl with a dangling response_decoder_ reference. A later frame on the stream can dispatch through the freed object and crash the process. The relevant scope boundary is that the default nghttp2 codec rejects the malformed trailers, and the trigger is upstream-only with oghttp2 enabled. This issue is fixed in versions 1.36.10, 1.37.6, 1.38.4, and 1.39.1.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
来源: CVE Program / CVE List V5

受影响产品

厂商 产品 影响版本 CPE 订阅
envoyproxy envoy < 1.36.10 -

二、漏洞 CVE-2026-73513 的公开POC

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三、漏洞 CVE-2026-73513 的情报信息

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CVE-2026-73513 补丁与修复 (3)

CVE-2026-73513 其他参考 (1)

CVE-2026-73513 其他参考 (4)

同批安全公告 · envoyproxy · 2026-09-21 · 共 13 条

CVE-2026-73550 7.5 HIGH Envoy: HTTP/2 Discarded Host Header 200 GB Header-Copy OOM in Envoy
CVE-2026-73512 7.5 HIGH Envoy: use-after-free in QUIC on internal redirects
CVE-2026-73553 7.5 HIGH Envoy: RBAC Authorization Bypass via Path Parameters
CVE-2026-73548 7.5 HIGH Envoy: Cross-user response poisoning via a generic (non-WebSocket) HTTP upgrade on Envoy's
CVE-2026-73547 7.5 HIGH Envoy ext_authz: request `:path` pseudoheader dereferenced w/o null check
CVE-2026-73552 7.5 HIGH Envoy: HTTP RBAC safe_regex can fail open on RFC-valid obs-text header values
CVE-2026-73546 7.4 HIGH Envoy: Stored XSS in Admin Stats Interface (/stats?format=html)
CVE-2026-48521 5.9 MEDIUM Envoy: HTTP/3 connection pool selection null-derefs in ProdClusterManagerFactory::allocate
CVE-2026-50572 5.9 MEDIUM Envoy: ext_authz - RawHttpClientImpl onSuccess 0x0 segfault
CVE-2026-73511 5.3 MEDIUM Envoy: Potential path-matching/authentication bypass when using Envoy in combination with
CVE-2026-73549 5.3 MEDIUM Envoy - Incomplete fix for CVE-2026-26310: copyInternetAddressAndPort crashes on scoped IP
CVE-2026-73551 5.3 MEDIUM Envoy: Path normalization does not handle dot and dotdot segments with parameters

IV. Related Vulnerabilities

Same product: envoy
Same vendor: envoyproxy
Same weakness: CWE-20

V. Comments for CVE-2026-73513

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