CVE-2026-58172
9.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
Ocelot through 24.1.0, fixed in commit f156fd4, contains a security control bypass vulnerability that allows denied clients to circumvent IP-based access restrictions by sending WebSocket upgrade requests. The WebSocket upgrade pipeline branch configured via MapWhen in OcelotPipelineExtensions.cs omits SecurityMiddleware, causing requests from blocked IP addresses to be proxied to downstream services without enforcement of the configured allow/block list.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ThreeMammals | Ocelot | 0 <= 24.1.0 | affected |
| ThreeMammals | Ocelot | f156fd4017ca25025fffdad8ec56c1d657dfb402 | unaffected |
Weaknesses
- CWE-288: Authentication Bypass Using an Alternate Path or Channel
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: poc
- Automatable: yes
- Technical Impact: total
References
- https://github.com/ThreeMammals/Ocelot/issues/2403
- https://github.com/ThreeMammals/Ocelot/pull/2406
- https://github.com/ThreeMammals/Ocelot/commit/f156fd4017ca25025fffdad8ec56c1d657dfb402
- https://www.vulncheck.com/advisories/ocelot-ip-allow-block-list-bypass-for-websocket-upgrade-requests
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.