MEDIUM 5.3 NVD
CVE-2026-86115
Sim before 0.8.14 classifies tool requests as internal based on URL prefix matching without scheme normalization, skipping SSRF validation and minting internal
Sim before 0.8.14 classifies tool requests as internal based on URL prefix matching without scheme normalization, skipping SSRF validation and minting internal authentication tokens. Authenticated workflow authors can bypass external URL validation by supplying paths starting with /api/ in HTTP blocks to reach internal-only endpoints like POST /api/function/execute.
References
- https://github.com/geo-chen/oss/blob/main/sim.md
- https://github.com/simstudioai/sim
- https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/lib/auth/hybrid.ts
- https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/tools/index.ts
- https://github.com/simstudioai/sim/pull/7179
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-09-05 via NVD.
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