CVE-2026-78850

State: Published
Severity: 5.0 Medium
Published: Oct 15, 2026
Updated: Oct 26, 2026
Reserved: Aug 25, 2026

Description

An issue in Matomo v.5.11.2 allows a remote attacker to obtain sensitive information via the SiteContentDetector / SitesManager component. NOTE: the Supplier disputes the relevance of this report because the site administrator is a trusted party, and would not plausibly set main_url to a URL that offers additional information to an adversary.

Scores

CVSS	Score	Vector	Source
3.1	5.0 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N	CISA-ADP

Weaknesses

CWE-918 Server-Side Request Forgery (SSRF)

Affected Products

Product	Versions
n/an/a	n/aAffected

References

https://github.com/matomo-org/matomo
https://github.com/matomo-org/matomo/tree/5.11.2
https://github.com/matomo-org/matomo/security/advisories
https://matomo.org/
https://github.com/SLO-CYBER-SEC/CVE-2026-78850
https://github.com/matomo-org/matomo/pull/24834

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