CVE Explorer
CVE-2026-40179
Prometheus is an open-source monitoring system and time series database. Versions 3.0 through 3.5.1 and 3.6.0 through 3.11.1 have stored cross-site scripting vulnerabilities in multiple components of the Prometheus web UI where metric names and label values are injected into innerHTML without escaping. In both the Mantine UI and old React UI, chart tooltips on the Graph page render metric names containing HTML/JavaScript without sanitization. In the old React UI, the Metric Explorer fuzzy search
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"prometheus","vendor":"prometheus","versions":[{"status":"affected","version":">= 3.0.0, < 3.5.2"},{"status":"affected","version":">= 3.6.0, < 3.11.2"},{"status":"affected","version":"< 0.311.2-0.20260410083055-07c6232d159b"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/prometheus/prometheus/commit/07c6232d159bfb474a077788be184d87adcfac3c","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/commit/07c6232d159bfb474a077788be184d87adcfac3c"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/references/2
{"name":"https://github.com/prometheus/prometheus/pull/18506","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/pull/18506"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/references/1
{"name":"https://github.com/prometheus/prometheus/security/advisories/GHSA-vffh-x6r8-xx99","tags":["x_refsource_CONFIRM"],"url":"https://github.com/prometheus/prometheus/security/advisories/GHSA-vffh-x6r8-xx99"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d1cb0720cdae1042c88fce8c647149008a923942eaff90cd78d1176b4acb08f7 · sha256:2f628248157dc0cc… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.