CVE-2026-126778

EUVD-2026-123772
Wallos 4.4.0 before 5.10.3 contains a stored cross-site scripting vulnerability in endpoints/cronjobs/sendnotifications.php that allows registered users to inject scripts via unescaped notification service responses. Attackers can point their Mattermost webhook URL or Web Push endpoint at a controlled server returning JavaScript, which executes in the administrator's session when sendnotifications.php is opened.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.4 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://github.com/ellite/Wallos/blob/v4.4.0/endpoints/cronjobs/sendnotifications.php#L641-L642
https://github.com/ellite/Wallos/blob/v5.10.2/endpoints/cronjobs/sendnotifications.php#L813-L816
https://github.com/ellite/Wallos/commit/693d8676f3e5b0c85e120fc5958ccb82f37ee89c
https://github.com/ellite/Wallos/releases/tag/v5.10.3
https://www.vulncheck.com/advisories/wallos-4.4.0-before-5.10.3-stored-xss-via-sendnotifications-php