CVE-2026-126954

EUVD-2026-125111
Glance from 0.7.9 before 0.8.8 contains a stored cross-site scripting vulnerability that allows malicious extension endpoints to inject javascript: URLs via the Widget-Title-URL response header. Attackers controlling an extension endpoint can execute script when users click the widget title, reading dashboard pages through same-origin requests and exfiltrating content.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.7 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/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: 24.16%
Common Weakness Enumeration
References
https://github.com/glanceapp/glance/blob/v0.8.7/internal/glance/templates/widget-base.html#L5
https://github.com/glanceapp/glance/blob/v0.8.7/internal/glance/widget-extension.go#L151-L152
https://github.com/glanceapp/glance/commit/e19081cfa029edbe16b1354ffe03076a8cdf0244
https://github.com/glanceapp/glance/releases/tag/v0.8.8
https://github.com/glanceapp/glance/security/advisories/GHSA-96x7-3hwp-rcfc
https://github.com/glanceapp/glance/security/advisories/GHSA-f2c4-p935-ffpj
https://www.vulncheck.com/advisories/glance-0.7.9-before-0.8.8-stored-xss-via-widget-title-url-header