How severe is CVE-2026-9808?

CVE-2026-9808 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-9808 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-9808?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-9808 have an EU (EUVD) identifier?

Yes. CVE-2026-9808 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33278.

When was CVE-2026-9808 published?

CVE-2026-9808 was published on 2026-05-29 and last updated on 2026-06-17.

CVE-2026-9808

CVE-2026-9808 is a high-severity vulnerability with a CVSS 3.x base score of 7.1. 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-863.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33278
Weakness: CWE-863
Published: 2026-05-29
Last modified: 2026-06-17

Description

An authorization bypass vulnerability exists in the Mautic 7 API v2 endpoints (utilizing API Platform). Under certain conditions, roles configured with owner-scope restrictions (such as `viewown` or `editown`) are not properly enforced. This allows low-privilege authenticated API users to bypass ownership-logic controls and access or modify resources belonging to other users.

Frequently asked questions

What is CVE-2026-9808?: An authorization bypass vulnerability exists in the Mautic 7 API v2 endpoints (utilizing API Platform). Under certain conditions, roles configured with owner-scope restrictions (such as `viewown` or `editown`) are not properly enforced. This allows low-privilege authenticated API users to bypass ownership-logic controls and access or modify resources belonging to other users.
How severe is CVE-2026-9808?: CVE-2026-9808 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-9808 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-9808?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-9808 have an EU (EUVD) identifier?: Yes. CVE-2026-9808 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33278.
When was CVE-2026-9808 published?: CVE-2026-9808 was published on 2026-05-29 and last updated on 2026-06-17.

References

https://github.com/mautic/mautic/security/advisories/GHSA-2jrw-c95w-h43g

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