CVE-2026-85738
mediumTREK is a collaborative travel planner.
TREK is a collaborative travel planner. Prior to 3.4.0, the checkSsrf logic in server/src/utils/ssrfGuard.ts does not recognize NAT64, 6to4, or Teredo IPv6 transition addresses that encode an IPv4 destination. An authenticated user who controls a DNS record can supply a URL whose AAAA result is a transition address embedding a private, loopback, or link-local IPv4 target, and isAlwaysBlocked and isPrivateNetwork classify the address as allowed. In a deployment that routes the applicable transition format, user-facing imports, webhooks, integrations, or plugin egress can reach internal services or cloud metadata and expose returned information. This issue is fixed in version 3.4.0.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/liketrek/TREK/commit/a2bd9be184a94997105ce190dad920c41e7b10df security-advisories@github.com
- https://github.com/liketrek/TREK/pull/1540 security-advisories@github.com
- https://github.com/liketrek/TREK/releases/tag/v3.4.0 security-advisories@github.com
- https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg security-advisories@github.com
- https://github.com/liketrek/TREK/security/advisories/GHSA-9hpq-mrpx-mcxg 134c704f-9b21-4f2e-91b3-4a467353bcc0