CVE-2026-86115Medium· 5.0▾ Sunlit

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

▾ Sunlit zone — Low / medium · no exploitation signal

Depth score28/ 100 · Low

impact 27.5 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Sep 5, 2026

Updated

Sep 8, 2026

CVSS

5.0

Vendor

simstudioai

Product

sim

CWE

CWE-441

Depth score

28 · Low

EPSS

0.30% · p23

Platforms

—

Source

NVD

Vector

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

CISA SSVC

decided 2026-09-08

Exploitation: none
Automatable: no
Technical impact: partial

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Sep 6.

0.3% → 0.3%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

3 events · 3 days

Sep 5, 2026Published
Disclosed via NVD
Sep 6, 2026EPSS first tracked
0.3%
Sep 8, 2026Record revised
Last analysed / modified upstream

simstudioai CWE-441 #nvd #cve.org

Affected

sim < 0.8.14

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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