CVE-2026-0817
MEDIUMCVSS 5.3/10EPSS 0.25%
Last modified
CVE-2026-0817 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.25% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wikimedia | Campaignevents | 1.39 |
| Wikimedia | Campaignevents | 1.43 |
| Wikimedia | Campaignevents | 1.44 |
| Wikimedia | Campaignevents | 1.45 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-0817?
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 a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.25% probability of exploitation in the next 30 days.
How do I fix CVE-2026-0817?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-0817?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST