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CVE-2026-126954

MEDIUMCVSS 4.7/10EPSS 0.31%

Last modified

CVE-2026-126954 is a medium-severity vulnerability rated 4.7/10 on the CVSS scale. 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.. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
4.7/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0
2.3/10

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability
0.31%

24.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
glanceappglance>= 0.7.9, < 0.8.8

References

Timeline

Published
Last Modified
Status
Deferred

Frequently Asked Questions

What is CVE-2026-126954?
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.
How severe is CVE-2026-126954?
CVE-2026-126954 has a CVSS score of 4.7/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.
How do I fix CVE-2026-126954?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST