CVE-2026-0817 — MEDIUM (5.3)

Vulnerability Description

Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Wikimedia	Campaignevents	1.39

Related Weaknesses (CWE)

CWE-862

References

FAQ

What is CVE-2026-0817?

CVE-2026-0817 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Missing Authorization vulnerability in Wikimedia Foundation MediaWiki - CampaignEvents extension allows Privilege Abuse.This issue affects MediaWiki - CampaignEvents extension: 1.45, 1.44, 1.43, 1.39.

How severe is CVE-2026-0817?

CVE-2026-0817 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-0817?

Check the references section above for vendor advisories and patch information. Affected products include: Wikimedia Campaignevents.