7.5

CVE-2016-6331: mediawiki Improper Access Control

CVSS: 7.5v3.0HighModified
AliasesDEBIAN-CVE-2016-6331
Published 20-04-2017Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2016-6331 is a high (CVSS 7.5) Improper Access Control vulnerability in mediawiki. EPSS estimates a 2.13% chance of exploitation in the next 30 days, higher than 81.8% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
2.13%
0%100%
Low · +0.16 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1
MGASA-2016-0305

Timeline

  1. 20-04-2017
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

ApiParse in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to bypass intended per-title read restrictions via a parse action to api.php.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

2.13%

Chance of exploitation in the next 30 days

Percentile

82%

Versus all other CVEs

30-day change

+0.16 pp

From 1.97% on 21-09-2026

21-09-202621-10-2026
EPSS score
2.13%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • mediawiki< 1:1.27.1-1
Mediawiki1 product
  • mediawiki≤ 1.23.14 | 1.26.0 | 1.26.1 | 1.26.2 | 1.26.3 | 1.26.4 | 1.27.0

2 vendors · 2 products

References

4 links