CVE-2023-25403

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Published Mar 3, 2023 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

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

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:yf-exam_project:yf-exam:1.8.0:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2023-29358	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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.652% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact partial

References

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

History

Mar 7, 2025 5:15 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Yf-exam Project Yf-exam

Weaknesses

CWE-639

Sources

CVE record Updated: Mar 7, 2025, 4:39 PM

Status: PUBLISHED
Assigner: mitre
Published: Mar 3, 2023, 12:00 AM
Updated: Mar 7, 2025, 4:39 PM
Reserved: Feb 6, 2023, 12:00 AM

View source JSON

Vulnrichment Updated: Aug 2, 2024, 11:18 AM

Updated: Aug 2, 2024, 11:18 AM

NVD Updated: Jun 17, 2026, 5:41 AM

Status: Modified
Published: Mar 3, 2023, 11:15 PM
Modified: Jun 17, 2026, 5:41 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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