CVE-2026-86115Sim before 0.8.14 Confused Deputy in Tool URL Routing Mints an Internal Token for a User-Supplied /api/ Path
Updated under an hour ago ()
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It affects simstudioai sim. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.0 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- Weakness (CWE)
- CWE-441
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
simstudioai sim simstudioai:sim (from the name) | before 0.8.14 | CNA record |
References
- https://github.com/geo-chen/oss/blob/main/sim.mdtechnical-description
- https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/tools/index.tstechnical-description
- https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/lib/auth/hybrid.tstechnical-description
- https://github.com/simstudioai/sim/pull/7179patch, issue-tracking
- https://github.com/simstudioai/simproduct
- https://www.vulncheck.com/advisories/sim-before-0.8.14-confused-deputy-in-tool-url-routing-mints-an-internal-token-for-a-user-supplied-api-paththird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.