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CVE-2017-0366

16
FAUCET Score

CVE-2017-0366 is a medium-severity vulnerability affecting MediaWiki versions prior to 1.28.1, 1.27.2, and 1.23.16, as well as Debian distributions. It allows an attacker to bypass SVG filter restrictions by manipulating default attribute values within a DTD declaration. With a CVSS score of 5.4, this vulnerability has a low attack complexity and can lead to limited confidentiality and integrity impacts, but does not affect availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.23.0, <= 1.23.16CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.27.0, < 1.27.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.28.0, < 1.28.1CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.34%
Probability of exploitation in next 30 days
EPSS Percentile
68.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0134 is in the 82nd percentile among its peer group of 21,924 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatno patchvia redhat_api
Product: Red Hat OpenShift Enterprise 3Fixed in: mediawiki123

Vendor Advisories (1)

redhatCVE-2017-0366Low

mediawiki: SVG filter evasion using default attribute values in DTD declaration

Nov 27, 2016

References

lists.wikimedia.org / pipermail/mediawiki-announce/2017-April/000207.html
Vendor Advisory
phabricator.wikimedia.org / T151735
ExploitIssue TrackingThird Party Advisory
security-tracker.debian.org / tracker/CVE-2017-0366
Third Party Advisory