CVE-2026-78850
An issue in Matomo v.5.11.2 allows a remote attacker to obtain sensitive information via the SiteContentDetector / SitesManager component.
Does this matter?
Lower severity and a low EPSS score (0.30%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.0 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
- EPSS
- 0.30% probability · 23th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Source
- cve@mitre.org
EPSS moved from 0.3% on 16 October 2026 to 0.3% on 26 October 2026.
References
- https://github.com/SLO-CYBER-SEC/CVE-2026-78850
- https://github.com/matomo-org/matomo
- https://github.com/matomo-org/matomo/pull/24834
- https://github.com/matomo-org/matomo/security/advisories
- https://github.com/matomo-org/matomo/tree/5.11.2
- https://matomo.org/
- https://github.com/SLO-CYBER-SEC/CVE-2026-78850
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.