Medium severity5.0NVD Advisory· Published Sep 5, 2026
CVE-2026-86115
CVE-2026-86115
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/geo-chen/oss/blob/main/sim.mdnvd
- github.com/simstudioai/sim/blob/v0.8.13/apps/sim/lib/auth/hybrid.tsnvd
- github.com/simstudioai/sim/blob/v0.8.13/apps/sim/tools/index.tsnvd
- github.com/simstudioai/sim/pull/7179nvd
- www.vulncheck.com/advisories/sim-before-0.8.14-confused-deputy-in-tool-url-routing-mints-an-internal-token-for-a-user-supplied-api-pathnvd
News mentions
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