CVE-2026-118262
- Source
- https://cve.org/CVERecord?id=CVE-2026-118262
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-118262.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-118262
- Aliases
- Downstream
- Published
- 2026-10-28T19:00:12Z
- Modified
- 2026-10-29T10:45:54Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Echo: WebSocket proxy can retain connections and handlers after client disconnect
- Details
-
Echo is a Go web framework. From 4.15.0 until 4.16.1 and 5.4.1, Echo's Proxy middleware can retain a handler, copy goroutines, and network connections after a WebSocket client disconnects when the upstream keeps its connection open. The raw proxy waits for both copy directions without reliably closing the peer connection when one direction ends, including when a rejected upgrade response uses HTTP keep-alive. Repeated connections can accumulate resources and cause denial of service, depending on proxy-route accessibility, upstream behavior, and connection deadlines. This issue is fixed in 4.16.1 and 5.4.1.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-772" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118262.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118262.json
- https://github.com/labstack/echo/commit/1855061e572ae9dab727c811d8382f266bfbaaec
- https://github.com/labstack/echo/commit/3fb0ba7e17645bb65611e2a08875d0a2f65c421f
- https://github.com/labstack/echo/releases/tag/v4.16.1
- https://github.com/labstack/echo/releases/tag/v5.4.1
- https://github.com/labstack/echo/security/advisories/GHSA-9969-6676-49h5
- https://nvd.nist.gov/vuln/detail/CVE-2026-118262
Affected packages
Git / github.com/labstack/echo
Affected ranges
- Type
- GIT
- Repo
- https://github.com/labstack/echo
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "4.15.0" }, { "fixed": "4.16.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "introduced": "5.0.0" }, { "fixed": "5.4.1" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "1855061e572ae9dab727c811d8382f266bfbaaec" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "3fb0ba7e17645bb65611e2a08875d0a2f65c421f" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v4.16.1", "range": [ { "fixed": "600b9855dfbcb22c7e643e43ce397d5248e882b2" } ], "source": "REFERENCES_TAG" }, { "original_tag": "v5.4.1", "range": [ { "fixed": "a6a9673a54d2c719ceb32ce6a929d35483acfb2b" } ], "source": "REFERENCES_TAG" } ] }