How severe is CVE-2026-26477?

CVE-2026-26477 has a CVSS 3.x base score of 4.3, 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 low.

Is CVE-2026-26477 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-2026-26477?

CVE-2026-26477 affects Dokuwiki. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-26477?

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

Does CVE-2026-26477 have an EU (EUVD) identifier?

Yes. CVE-2026-26477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18657.

When was CVE-2026-26477 published?

CVE-2026-26477 was published on 2026-04-03 and last updated on 2026-06-17.

CVE-2026-26477

CVE-2026-26477 is a medium-severity vulnerability in Dokuwiki with a CVSS 3.x base score of 4.3. 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-770.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (36th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18657
Weakness: CWE-770
Affected product: Dokuwiki
Published: 2026-04-03
Last modified: 2026-06-17

Description

An issue in Dokuwiki v.2025-05-14b "Librarian" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file

Frequently asked questions

What is CVE-2026-26477?: An issue in Dokuwiki v.2025-05-14b "Librarian" [56.2] allows a remote attacker to cause a denial of service via the media_upload_xhr() function in the media.php file
How severe is CVE-2026-26477?: CVE-2026-26477 has a CVSS 3.x base score of 4.3, 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 low.
Is CVE-2026-26477 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-2026-26477?: CVE-2026-26477 affects Dokuwiki. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-26477?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-26477 have an EU (EUVD) identifier?: Yes. CVE-2026-26477 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18657.
When was CVE-2026-26477 published?: CVE-2026-26477 was published on 2026-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dokuwiki:dokuwiki:2025-05-14b:*:*:*:*:*:*:*

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