What is CVE-2017-0363?

CVE-2017-0363 is a medium-severity vulnerability in MediaWiki, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2018-04-13.

How severe is CVE-2017-0363?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Open Redirect in MediaWiki

CVE-2017-0363

Mediawiki before 1.28.1 / 1.27.2 / 1.23.16 has a flaw where Special:UserLogin?returnto=interwiki:foo will redirect to external sites.

Vulnerability class: Open Redirect

Published 2018-04-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.011 (63.9th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: -0.000

Affected products

MediaWiki
Debian Linux — versions 7.0

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

References

lists.wikimedia.org/pipermail/mediawiki-announce/2017-April/000207.html (Vendor Advisory, mailing-list)
phabricator.wikimedia.org/T109140 (Third Party Advisory, Issue Tracking)
security-tracker.debian.org/tracker/CVE-2017-0363 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-0363?: CVE-2017-0363 is a medium-severity vulnerability in MediaWiki, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 6.1/10. Published 2018-04-13.
How severe is CVE-2017-0363?: Medium severity. CVSS v3 base score is 6.1 out of 10.