CVE-2026-86115

medium

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.

CVSS

5.0

5.0 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-09-05 10:16

Modified: 2026-09-23 17:17

NVD status: Deferred

Last synced 1 day ago

Verified against the source API 2026-10-27 06:50 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-441

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/geo-chen/oss/blob/main/sim.md disclosure@vulncheck.com
https://github.com/simstudioai/sim disclosure@vulncheck.com
https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/lib/auth/hybrid.ts disclosure@vulncheck.com
https://github.com/simstudioai/sim/blob/v0.8.13/apps/sim/tools/index.ts disclosure@vulncheck.com
https://github.com/simstudioai/sim/pull/7179 disclosure@vulncheck.com
https://www.vulncheck.com/advisories/sim-before-0.8.14-confused-deputy-in-tool-url-routing... disclosure@vulncheck.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 06:50 UTC · record ↗

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