CVE-2025-15099CWE-287

CVE-2025-15099

High · published December 26, 2025

CVSS v3.1
7.3
EPSS
1%
Percentile
55.7
In the wild
Unconfirmed
What it is

⚠️ A simple argument tweak is all it takes to bypass authentication in simstudioai! This sneaky vulnerability in the CRON Secret Handler can be exploited remotely, so let's dig in! 🔍 Think of this vulnerability like a restaurant where the chef accidentally leaves a secret recipe book on the counter, allowing anyone to walk in and snag the ingredients without needing a reservation. If someone knows just the right dish to ask for, they could effectively serve themselves a feast! If an attacker manipulates the INTERNAL_API_SECRET, they could gain unauthorized access to sensitive parts of the application—essentially inviting themselves into the kitchen without the chef's approval. This could lead to exposure of confidential data or the ability to manipulate the system in devastating ways!

Put simply

Think of this vulnerability like a restaurant where the chef accidentally leaves a secret recipe book on the counter, allowing anyone to walk in and snag the ingredients without needing a reservation. If someone knows just the right dish to ask for, they could effectively serve themselves a feast! This vulnerability arises from improper authentication checks in the file apps/sim/lib/auth/internal.ts, allowing remote attackers to alter a critical secret and bypass authentication mechanisms. The lack of strict validation makes it a prime target for exploitation.

What to do

If an attacker manipulates the INTERNAL_API_SECRET, they could gain unauthorized access to sensitive parts of the application—essentially inviting themselves into the kitchen without the chef's approval. This could lead to exposure of confidential data or the ability to manipulate the system in devastating ways! To protect your application, apply patch e359dc2946b12ed5e45a0ec9c95ecf91bd18502a immediately! Additionally, review your authentication flows to ensure they are robust against such manipulations. Don't let unauthorized users slip through! You’ve got this! Follow these steps and fortify your defenses! 🛡️

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00788 · 55.7th percentile
Weakness
CWE-287 · Improper Authentication
Published
2025-12-26T09:15Z
Affected products (1)
ProductVersionsFixed in
sim/sim≤ 0.5.27—
References (8)
EPSS history
Timeline
  • 26 DEC 04:02Z
    simstudioai sim CRON Secret internal.ts improper authentication
    cvelistv5