CVE-2025-15099

Name: CVE-2025-15099
Creator: NVD / NIST
Published: 2025-12-26T04:15:40.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.73%

Last modified Jun 17, 2026

CVE-2025-15099 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. A vulnerability was identified in simstudioai sim up to 0.5.27. This vulnerability affects unknown code of the file apps/sim/lib/auth/internal.ts of the component CRON Secret Handler. EPSS estimates a 0.73% chance of exploitation in the next 30 days.

Description

A vulnerability was identified in simstudioai sim up to 0.5.27. This vulnerability affects unknown code of the file apps/sim/lib/auth/internal.ts of the component CRON Secret Handler. The manipulation of the argument INTERNAL_API_SECRET leads to improper authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The identifier of the patch is e359dc2946b12ed5e45a0ec9c95ecf91bd18502a. Applying a patch is the recommended action to fix this issue.

Metrics

CVSS 3.1

9.8/10

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

CVSS 4.0

5.5/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.73%

49.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Sim	Sim	<= 0.5.27

References

https://gist.github.com/H2u8s/c533741e1b36f6245d41cace89a7f4d2Exploit, Third Party Advisory
https://gist.github.com/H2u8s/c533741e1b36f6245d41cace89a7f4d2#-steps-to-reproduceExploit, Third Party Advisory
https://github.com/simstudioai/sim/commit/e359dc2946b12ed5e45a0ec9c95ecf91bd18502aPatch
https://github.com/simstudioai/sim/pull/2343Exploit, Issue Tracking
https://vuldb.com/?ctiid.338430Permissions Required, VDB Entry
https://vuldb.com/?id.338430Third Party Advisory, VDB Entry
https://vuldb.com/?submit.710255Third Party Advisory, VDB Entry
https://gist.github.com/H2u8s/c533741e1b36f6245d41cace89a7f4d2#-steps-to-reproduceExploit, Third Party Advisory

Timeline

Published: Dec 26, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-15099?

How severe is CVE-2025-15099?

CVE-2025-15099 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.73% probability of exploitation in the next 30 days.

How do I fix CVE-2025-15099?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-15099?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST