CVE-2023-25403

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-639

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/CleverStupidDog/yf-exam/issues/2Exploit, Issue Tracking, Third Party Advisory
https://github.com/Fw-fW-fw/UPDATE-CVE/blob/main/CVE-2023-25403Third Party Advisory
https://github.com/CleverStupidDog/yf-exam/issues/2Exploit, Issue Tracking, Third Party Advisory
https://github.com/Fw-fW-fw/UPDATE-CVE/blob/main/CVE-2023-25403Third Party Advisory

Timeline

Published: Mar 3, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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