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CVE-2021-46148

22
FAUCET Score

CVE-2021-46148 is a medium-severity information disclosure vulnerability affecting MediaWiki versions prior to 1.35.5, 1.36.3, and 1.37.1. Unprivileged users could view confidential information, such as IP addresses and User-Agent headers, on a testwiki SecurePoll instance. The vulnerability has a CVSS score of 6.5, indicating a low attack complexity and requiring low privileges, with a high impact on confidentiality. There is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.35.5CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.36.0, < 1.36.3CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.37.0, < 1.37.1CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.18%
Probability of exploitation in next 30 days
EPSS Percentile
64.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0118 is in the 78th percentile among its peer group of 21,977 CVEs.

Social Chatter

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 Advisories (1)

redhatCVE-2021-46148Moderate

mediawiki: unprivileged users can view confidential information

Jan 10, 2022

References

gerrit.wikimedia.org / r/q/Ib2715adb281f8892b586dcb1895e87ac0eb548b0
Third Party Advisory
phabricator.wikimedia.org / T290808
Third Party Advisory
phabricator.wikimedia.org / T290856
Third Party Advisory