DEBIAN-CVE-2026-44903
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.
DEBIAN-CVE-2026-44903
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:DEBIAN-CVE-2026-44903
prometheus
Source reference: /affected/0/package/name
- Affected versions
- 2.53.3+ds1-2
Source reference:
/affected/0/versions2.53.4+ds1-1Source reference:
/affected/0/versions2.53.5+ds1-1Source reference:
/affected/0/versions2.53.5+ds1-2Source reference:
/affected/0/versions2.53.5+ds1-3Source reference:
/affected/0/versions2.53.5+ds1-4Source reference:
/affected/0/versions2.53.5+ds1-5Source reference:
/affected/0/versions3.5.3+ds1-1Source reference:
/affected/0/versions3.5.3+ds1-2Source reference:
/affected/0/versions3.5.3+ds1-3Source reference:
/affected/0/versions3.5.3+ds1-4Source reference:
/affected/0/versions3.5.3+ds1-5Source reference:
/affected/0/versions3.5.3+ds1-6~exp1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
prometheus
Source reference: /affected/1/package/name
- Affected versions
- 2.53.3+ds1-2
Source reference:
/affected/1/versions2.53.4+ds1-1Source reference:
/affected/1/versions2.53.5+ds1-1Source reference:
/affected/1/versions2.53.5+ds1-2Source reference:
/affected/1/versions2.53.5+ds1-3Source reference:
/affected/1/versions2.53.5+ds1-4Source reference:
/affected/1/versions2.53.5+ds1-5Source reference:
/affected/1/versions - Fixed versions
- 3.5.3+ds1-1
Source reference:
/affected/1/ranges - Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "prometheus",
"purl": "pkg:deb/debian/prometheus?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"2.53.3+ds1-2",
"2.53.4+ds1-1",
"2.53.5+ds1-1",
"2.53.5+ds1-2",
"2.53.5+ds1-3",
"2.53.5+ds1-4",
"2.53.5+ds1-5",
"3.5.3+ds1-1",
"3.5.3+ds1-2",
"3.5.3+ds1-3",
"3.5.3+ds1-4",
"3.5.3+ds1-5",
"3.5.3+ds1-6~exp1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44903.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.5.3+ds1-1"
}
]
}
],
"package": {
"name": "prometheus",
"purl": "pkg:deb/debian/prometheus?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"versions": [
"2.53.3+ds1-2",
"2.53.4+ds1-1",
"2.53.5+ds1-1",
"2.53.5+ds1-2",
"2.53.5+ds1-3",
"2.53.5+ds1-4",
"2.53.5+ds1-5"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-44903.json"
},
"ecosystem_specific": {
"urgency": "unimportant"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #56549 · Revision 1
- Added to Heist Feed
- Publisher date