2.3

CVE-2026-5266: wikimedia foundation echo

CVSS: 2.3v4.0LowAwaiting analysis
AliasesUBUNTU-CVE-2026-5266DEBIAN-CVE-2026-5266
Published 11-05-2026Last modified 11-05-2026
Open JSON

Vulnerability summary

CVE-2026-5266 is a low (CVSS 2.3) vulnerability in wikimedia foundation echo. EPSS estimates a 0.38% chance of exploitation in the next 30 days, higher than 30.7% of scored vulnerabilities.

Overall risk
9/100
0100
Minimal · default modelHow is this calculated?
CVSS score
2.3/10
010
Low · v4.0 (CVE.org)
EPSS score
0.38%
0%100%
Low · +0.14 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 11-05-2026
    PublishedVulnerability first disclosed.
  2. 11-05-2026
    Last modifiedVulnerability information updated.

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Echo. This vulnerability is associated with program files includes/Api/ApiEchoNotifications.Php. This issue affects Echo: from * before 1.43.7, 1.44.4, 1.45.2.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.38%

Chance of exploitation in the next 30 days

Percentile

31%

Versus all other CVEs

30-day change

+0.14 pp

From 0.25% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.38%

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< 1:1.43.8+dfsg-1~deb13u1 | < 1:1.43.8+dfsg-1
Ubuntu1 product
  • mediawikiAll versions (No fix recorded)
Wikimedia foundation1 product
  • echo< 1.43.7, 1.44.4, 1.45.2

3 vendors · 3 products

References

8 links