How severe is CVE-2026-29905?

CVE-2026-29905 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 none, and availability high.

Is CVE-2026-29905 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29905?

CVE-2026-29905 affects Getkirby Kirby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29905?

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

Does CVE-2026-29905 have an EU (EUVD) identifier?

Yes. CVE-2026-29905 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16232.

When was CVE-2026-29905 published?

CVE-2026-29905 was published on 2026-03-26 and last updated on 2026-06-17.

CVE-2026-29905

CVE-2026-29905 is a medium-severity vulnerability in Getkirby Kirby 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16232
Weakness: CWE-20
Affected product: Getkirby Kirby
Published: 2026-03-26
Last modified: 2026-06-17

Description

Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.

Frequently asked questions

What is CVE-2026-29905?: Kirby CMS through 5.1.4 allows an authenticated user with 'Editor' permissions to cause a persistent Denial of Service (DoS) via a malformed image upload. The application fails to properly validate the return value of the PHP getimagesize() function. When the system attempts to process this file for metadata or thumbnail generation, it triggers a fatal TypeError.
How severe is CVE-2026-29905?: CVE-2026-29905 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 none, and availability high.
Is CVE-2026-29905 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (36th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29905?: CVE-2026-29905 affects Getkirby Kirby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29905?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29905 have an EU (EUVD) identifier?: Yes. CVE-2026-29905 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16232.
When was CVE-2026-29905 published?: CVE-2026-29905 was published on 2026-03-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:getkirby:kirby:*:*:*:*:*:*:*:*

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