SB2025101708 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Formidable
Published: October 17, 2025
Security Bulletin ID
SB2025101708
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (CVE-ID: CVE-2025-46653)
The vulnerability allows a remote user to modify data on the system.
The vulnerability exists due to Formidable relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure. A remote user can modify data on the system.
Remediation
Install update from vendor's website.
References
- https://github.com/node-formidable/formidable/blob/d0fbec13edc8add54a1afb9ce1a8d3db803f8d47/CHANGELOG.md?plain=1#L10
- https://github.com/node-formidable/formidable/commit/022c2c5577dfe14d2947f10909d81b03b6070bf5
- https://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md