CVE-2026-26311
- Source
- https://cve.org/CVERecord?id=CVE-2026-26311
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26311.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-26311
- Aliases
- Published
- 2026-03-10T19:14:41Z
- Modified
- 2026-08-12T03:51:36Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- Envoy HTTP: filter chain execution on reset streams causing UAF crash
- Details
-
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, a logic vulnerability in Envoy's HTTP connection manager (FilterManager) that allows for Zombie Stream Filter Execution. This issue creates a "Use-After-Free" (UAF) or state-corruption window where filter callbacks are invoked on an HTTP stream that has already been logically reset and cleaned up. The vulnerability resides in source/common/http/filter_manager.cc within the FilterManager::decodeData method. The ActiveStream object remains valid in memory during the deferred deletion window. If a DATA frame arrives on this stream immediately after the reset (e.g., in the same packet processing cycle), the HTTP/2 codec invokes ActiveStream::decodeData, which cascades to FilterManager::decodeData. FilterManager::decodeData fails to check the saw_downstream_reset_ flag. It iterates over the decoder_filters_ list and invokes decodeData() on filters that have already received onDestroy(). This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-416" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26311.json" }- References
Affected packages
Git / github.com/envoyproxy/envoy
Affected ranges
- Type
- GIT
- Repo
- https://github.com/envoyproxy/envoy
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedIntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "cpe": [ "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*", "cpe:2.3:a:envoyproxy:envoy:1.37.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "0" }, { "fixed": "1.34.13" }, { "introduced": "1.35.0" }, { "fixed": "1.35.8" }, { "introduced": "1.36.0" }, { "fixed": "1.36.5" }, { "introduced": "1.37.0" }, { "last_affected": "1.37.0" } ], "source": [ "CPE_RANGE", "CPE_STRING" ] }