What’s Vulnerable › Vulnerabilities

CVE-2023-25403

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-03-03 · updated 2026-06-17
• Weakness: CWE-639

Description

CleverStupidDog yf-exam v 1.8.0 is vulnerable to Authentication Bypass. The program uses a fixed JWT key, and the stored key uses username format characters. Any user who logged in within 24 hours. A token can be forged with his username to bypass authentication.

Affected products

• Yf-Exam Project Yf-Exam: 1.8.0

References

• https://github.com/CleverStupidDog/yf-exam/issues/2
• https://github.com/Fw-fW-fw/UPDATE-CVE/blob/main/CVE-2023-25403
• https://github.com/CleverStupidDog/yf-exam/issues/2
• https://github.com/Fw-fW-fw/UPDATE-CVE/blob/main/CVE-2023-25403

Get alerted when CVE-2023-25403 or the next vulnerability affects your stack