Vulnerability details

CVE-2026-77294

mauriceboe TREK

TREK: Server-Side Request Forgery via User-Configurable LLM Base URL

CVSS 3.1
8.1High

Official description

TREK is a collaborative travel planner. Prior to 3.3.0, TREK allows an authenticated user to store an attacker-controlled llm_base_url through the settings API when the LLM_PARSING feature is enabled. Write permission to the target trip instance is required to trigger the vulnerable AI-assisted import path. The value is consumed by the clients in server/src/nest/llm-parse/clients/openai-compatible.client.ts, server/src/nest/llm-parse/clients/anthropic.client.ts, and server/src/nest/llm-parse/router/ollama-format.client.ts without applying the server-side request forgery guard. Triggering AI-assisted trip parsing causes the server to request the supplied destination, and upstream error response text can be returned in parsing warnings. This permits internal service discovery and access to link-local cloud metadata, with possible disclosure of infrastructure credentials and subsequent modification of protected cloud resources. This issue is fixed in version 3.3.0.

CVSS scores

ScoreVersionSourceVector
8.1High 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Affected products

VendorProductVersionsSource
mauriceboe TREK < 3.3.0 CVEProject cvelistV5 (CNA)

References and advisories

4
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Details

Published
2026-09-24
Last updated
2026-09-24
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.3%
Probability of exploitation in 30 days
23.7%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Proof of concept
Technical impact
Total

Weaknesses (CWE)

  • CWE-918
    Server-Side Request Forgery (SSRF)