CVE-2026-21641

Name: CVE-2026-21641
Creator: NVD / NIST
Published: 2026-01-20T21:16:06.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2026-21641 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. HackerOne community member Jad Ghamloush (0xjad) has reported an authorization bypass vulnerability in the `tracker-delete.php` script of Revive Adserver. Users with permissions to delete trackers are mistakenly allowed to delete trackers owned by other accounts.. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

Description

HackerOne community member Jad Ghamloush (0xjad) has reported an authorization bypass vulnerability in the `tracker-delete.php` script of Revive Adserver. Users with permissions to delete trackers are mistakenly allowed to delete trackers owned by other accounts.

Metrics

CVSS 3.1

6.5/10

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

CVSS 3.0

7.1/10

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

EPSS Probability

0.23%

13.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-285

Affected Software

Vendor	Product	Versions
Aquaplatform	Revive Adserver	<= 6.0.4

References

https://hackerone.com/reports/3445710Third Party Advisory

Timeline

Published: Jan 20, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-21641?

How severe is CVE-2026-21641?

CVE-2026-21641 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2026-21641?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-21641?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST