CVE-2026-21640

CVSS Score & Metrics

Base Score

2.7 / 10

Vector String

                                        CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L                                    

Vulnerability Description

HackerOne community member Faraz Ahmed (PakCyberbot) has reported a format string injection in the Revive Adserver settings. When specific character combinations are used in a setting, the admin user console could be disabled due to a fatal PHP error.

Vulnerability Details

Published Date

January 20, 2026

Last Modified

January 26, 2026

CWE ID

CWE-134

Source

NVD

Vendor

Revive

Product

Revive Adserver

External References

https://hackerone.com/reports/3445332

CVSS Score & Metrics

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Vulnerability Details

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