๐Ÿ›ก๏ธ CVE-2026-44903
๐ŸŸก CVSS 5.0 โ€” Medium โœ… No Known Exploit CWE-79 NVD
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Prometheus is an open-source monitoring system and time series database. From 2.49.0 to before 3.5.3 and 3.11.3, in the Prometheus server's legacy web UI (enabled via the command-line flag --enable-feature=old-ui), the histogram heatmap chart view does not escape le label values when inserting them into the HTML for use as axis tick mark labels. An attacker who can inject crafted metrics can execute JavaScript in the browser of any Prometheus user who views the metric in the heatmap chart UI. This vulnerability is fixed in 3.5.3 and 3.11.3.

Details

Severity Medium
CVSS Score 5.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CWE CWE-79
Public Exploit โœ… No
Source NVD
Published 2026-05-05
Updated 2026-06-15
Modified 2026-06-08
Fix URL N/A

Affected Packages

Software From version Fixed in
github.com/prometheus/prometheus โ€” โ€”
prometheus โ€” โ€”
unknown โ€” โ€”

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