What is CVE-2017-0367?

CVE-2017-0367 is a high-severity vulnerability in MediaWiki, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.8/10. Published 2018-04-13.

How severe is CVE-2017-0367?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in MediaWiki

CVE-2017-0367

Mediawiki before 1.28.1 / 1.27.2 contains an unsafe use of temporary directory, where having LocalisationCache directory default to system tmp directory is insecure.

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.018 (77.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: -0.000

Affected products

MediaWiki
Debian Linux — versions 7.0

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

lists.wikimedia.org/pipermail/mediawiki-announce/2017-April/000207.html (Vendor Advisory, mailing-list)
phabricator.wikimedia.org/T161453 (Third Party Advisory, Issue Tracking)
security-tracker.debian.org/tracker/CVE-2017-0367 (Third Party Advisory)

Frequently asked questions

What is CVE-2017-0367?: CVE-2017-0367 is a high-severity vulnerability in MediaWiki, classified under Exposure of Resource to Wrong Sphere. CVSS score: 8.8/10. Published 2018-04-13.
How severe is CVE-2017-0367?: High severity. CVSS v3 base score is 8.8 out of 10.