What is CVE-2018-25246?

CVE-2018-25246 is a high-severity vulnerability in Wikipedia, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-04-04.

How severe is CVE-2018-25246?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Wikipedia

CVE-2018-25246

Wikipedia 12.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the application by submitting oversized input through the search functionality. Attackers can paste a large buffer of repeated charact…

Vulnerability class: Broken Authentication

EPSS: 0.000 (5.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Wikipedia — versions 12.0

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

ExploitDB-45324 (exploit)
Product Reference (product)

Frequently asked questions

What is CVE-2018-25246?: CVE-2018-25246 is a high-severity vulnerability in Wikipedia, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2026-04-04.
How severe is CVE-2018-25246?: High severity. CVSS v3 base score is 7.5 out of 10.