How severe is CVE-2026-21641?

CVE-2026-21641 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2026-21641 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-21641?

CVE-2026-21641 affects Aquaplatform Revive Adserver. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-21641?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-21641 have an EU (EUVD) identifier?

Yes. CVE-2026-21641 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3341.

When was CVE-2026-21641 published?

CVE-2026-21641 was published on 2026-01-20 and last updated on 2026-06-17.

CVE-2026-21641

CVE-2026-21641 is a medium-severity vulnerability in Aquaplatform Revive Adserver with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3341
Weakness: CWE-285
Affected product: Aquaplatform Revive Adserver
Published: 2026-01-20
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-21641?: 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.
How severe is CVE-2026-21641?: CVE-2026-21641 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2026-21641 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-21641?: CVE-2026-21641 affects Aquaplatform Revive Adserver. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-21641?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-21641 have an EU (EUVD) identifier?: Yes. CVE-2026-21641 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3341.
When was CVE-2026-21641 published?: CVE-2026-21641 was published on 2026-01-20 and last updated on 2026-06-17.

References

https://hackerone.com/reports/3445710

Affected products (1)

cpe:2.3:a:aquaplatform:revive_adserver:*:*:*:*:*:*:*:*

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