ZDF
Sign inSign up

Vulnerabilities

Vulnerability · 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

Published Apr 3, 2026 · catalog updated Jul 24, 2026 · An issue in Dokuwiki

Check if you run it

No confirmed exploitation is on record for CVE-2026-26477. EPSS is 0.55%. Act only if a listed version of An issue in Dokuwiki is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (An issue in Dokuwiki).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.55%
Remediation
Not established
Affected products
cpe dokuwiki/dokuwiki

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

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe dokuwiki/dokuwiki2025-05-14b

How to fix CVE-2026-26477

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-26477. EPSS is 0.55%. Act only if a listed version of An issue in Dokuwiki is installed.

Which versions are affected?

Compare what you have installed with 2025-05-14b. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-400: Uncontrolled Resource Consumption; CWE-770: Allocation of Resources Without Limits or Throttling. EPSS 0.55%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 3, 2026 · NIST NVD

    Detected

    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

  2. Jul 24, 2026 · NIST NVD

    Updated

    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

Sources

  • CVE.orgVulnerability recordCVE-2026-26477

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-26477

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.