How severe is CVE-2026-29002?

CVE-2026-29002 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-29002 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29002?

CVE-2026-29002 affects Couchcms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29002?

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-2026-29002 have an EU (EUVD) identifier?

Yes. CVE-2026-29002 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21384.

When was CVE-2026-29002 published?

CVE-2026-29002 was published on 2026-04-10 and last updated on 2026-06-17.

CVE-2026-29002

CVE-2026-29002 is a high-severity vulnerability in Couchcms with a CVSS 3.x base score of 7.2. 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-639.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v4: 8.6
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21384
Weakness: CWE-639
Affected product: Couchcms
Published: 2026-04-10
Last modified: 2026-06-17

Description

CouchCMS contains a privilege escalation vulnerability that allows authenticated Admin-level users to create SuperAdmin accounts by tampering with the f_k_levels_list parameter in user creation requests. Attackers can modify the parameter value from 4 to 10 in the HTTP request body to bypass authorization validation and gain full application control, circumventing restrictions on SuperAdmin account creation and privilege assignment.

Frequently asked questions

What is CVE-2026-29002?: CouchCMS contains a privilege escalation vulnerability that allows authenticated Admin-level users to create SuperAdmin accounts by tampering with the f_k_levels_list parameter in user creation requests. Attackers can modify the parameter value from 4 to 10 in the HTTP request body to bypass authorization validation and gain full application control, circumventing restrictions on SuperAdmin account creation and privilege assignment.
How severe is CVE-2026-29002?: CVE-2026-29002 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-29002 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29002?: CVE-2026-29002 affects Couchcms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29002?: 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-2026-29002 have an EU (EUVD) identifier?: Yes. CVE-2026-29002 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21384.
When was CVE-2026-29002 published?: CVE-2026-29002 was published on 2026-04-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:couchcms:couchcms:*:*:*:*:*:*:*:*

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