CVE-2026-79575

JWT Signing Secret Derived from Username and Month Exposes yfexam‑exam v2.0

Published Sep 8, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
The JWT signing secret in yfexam-exam v2.0 is derived from the username and the current month instead of a random server-side key, making the secret key easily obtainable via a bruteforce attack.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Title JWT Signing Secret Derived from Username and Month Exposes yfexam‑exam v2.0
Type Values Removed Values Added
Title JWT Signing Secret Derived from Username and Current Month Enables Brute‑Force Extraction
Weaknesses CWE-327
CWE-798
Type Values Removed Values Added
Weaknesses CWE-330
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title JWT Signing Secret Derived from Username and Current Month Enables Brute‑Force Extraction
Weaknesses CWE-327
CWE-798
Type Values Removed Values Added
Description The JWT signing secret in yfexam-exam v2.0 is derived from the username and the current month instead of a random server-side key, making the secret key easily obtainable via a bruteforce attack.
References

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 9, 2026, 2:58 PM
Reserved
Aug 25, 2026, 12:00 AM
Status
Deferred
Published
Sep 8, 2026, 3:18 PM
Modified
Sep 9, 2026, 4:04 PM