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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| prometheus | prometheus | >= 2.49.0, < 3.5.3, >= 3.6.0-rc.0, < 3.11.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | prometheus | 3.5.3+ds1-1 | — |
| Debian 13 | prometheus | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | prometheus | No fix yet | — |
| Ubuntu 25.10 | prometheus | No fix yet | — |
| Ubuntu 20.04 LTS | prometheus | No fix yet | — |
| Ubuntu 18.04 LTS | prometheus | No fix yet | — |
| Ubuntu 16.04 LTS | prometheus | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | prometheus | No fix yet | — |
| Ubuntu Pro 24.04 LTS | prometheus | No fix yet | — |
| Ubuntu Pro 22.04 LTS | prometheus | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | amazon-cloudwatch-agent | 1.300074.1-r2 | — |
| Wolfi rolling | amazon-cloudwatch-agent-operator | 3.5.0-r0 | — |
| Wolfi rolling | aws-otel-collector | 0.49.0-r0 | — |
| Wolfi rolling | certificate-transparency-trillian-ctserver | 1.3.3-r8 | — |
| Wolfi rolling | cloud-sql-proxy-2.16 | 2.16.0-r20 | — |
| Wolfi rolling | cloud-sql-proxy-2.21 | 2.21.3-r1 | — |
| Wolfi rolling | cortex +9 | No fix yet | — |
| Wolfi rolling | datadog-agent-7.77 +2 | 7.77.3-r10 | — |
| Wolfi rolling | datadog-agent-7.78 +2 | 7.78.4-r3 | — |
| Wolfi rolling | grafana-12.4 | 12.4.10-r0 | — |
| Wolfi rolling | istioctl-1.29 +1 | 1.29.2-r3 | — |
| Wolfi rolling | jaeger-2-jaeger | 2.17.0-r7 | — |
| Wolfi rolling | k8sgpt | 0.4.36-r1 | — |
| Wolfi rolling | karma | 0.129-r2 | — |
| Wolfi rolling | keda-2.19 +1 | 2.19.0-r15 | — |
| Wolfi rolling | loki-3.6 +3 | 3.6.12-r0 | — |
| Wolfi rolling | loki-3.7 +3 | 3.7.2-r1 | — |
| Wolfi rolling | mc | 0.20250813.083541-r11 | — |
| Wolfi rolling | mcp-grafana | 0.13.1-r1 | — |
| Wolfi rolling | metrics-server | 0.8.1-r8 | — |
| Wolfi rolling | minio | 0.20260512.133534-r0 | — |
| Wolfi rolling | minio-object-browser | 2.0.4-r14 | — |
| Wolfi rolling | minio-operator +1 | 7.1.1-r28 | — |
| Wolfi rolling | minio-operator-compat | 7.1.1-r33 | — |
| Wolfi rolling | node-problem-detector-1.35 | 1.35.2-r12 | — |
| Wolfi rolling | opentelemetry-collector | 0.152.1-r0 | — |
| Wolfi rolling | opentelemetry-operator-otel-allocator | 0.150.0-r1 | — |
| Wolfi rolling | prometheus-pushgateway | 1.11.2-r10 | — |
| Wolfi rolling | splunk-otel-collector +1 | 0.152.0-r0 | — |
| Wolfi rolling | telegraf-1.38 | 1.38.3-r3 | — |
| Wolfi rolling | tempo-2.10 +2 | 2.10.6-r0 | — |
| Wolfi rolling | trillian-logserver +1 | 1.7.3-r5 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/prometheus/prometheus | < 0.311.3 | 0.311.3 | GHSA-fw8g-cg8f-9j28 |
Advisories 2
- WID-SEC-2026-1292 Prometheus: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026