CVE Explorer

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. Th

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:652588464ab053088ae06ff5d8906b7259bb4655875c44afecc4f06882e854d2

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"prometheus","vendor":"prometheus","versions":[{"status":"affected","version":">= 2.49.0, < 3.5.3"},{"status":"affected","version":">= 3.6.0-rc.0, < 3.11.3"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:f1bbf77db288ea1ce498b84e3aacf5184f2cf3e07e9bf0cbf33fa644c33e8cc2 · sha256:ef3e9d4378d553db… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":5.1,"baseSeverity":"MEDIUM","privilegesRequired":"LOW","subAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"LOW","userInteraction":"PASSIVE","vectorString":"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","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:f1bbf77db288ea1ce498b84e3aacf5184f2cf3e07e9bf0cbf33fa644c33e8cc2 · sha256:ef3e9d4378d553db… · /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_v5cwe
urn:baitaphish:normalized-source-record:v2:f1bbf77db288ea1ce498b84e3aacf5184f2cf3e07e9bf0cbf33fa644c33e8cc2 · sha256:ef3e9d4378d553db… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/prometheus/prometheus/commit/38f23b9075ced1de2b82d2dad8b2bebb1ecd5b7d","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/commit/38f23b9075ced1de2b82d2dad8b2bebb1ecd5b7d"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f1bbf77db288ea1ce498b84e3aacf5184f2cf3e07e9bf0cbf33fa644c33e8cc2 · sha256:ef3e9d4378d553db… · /containers/cna/references/1

{"name":"https://github.com/prometheus/prometheus/security/advisories/GHSA-fw8g-cg8f-9j28","tags":["x_refsource_CONFIRM"],"url":"https://github.com/prometheus/prometheus/security/advisories/GHSA-fw8g-cg8f-9j28"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:f1bbf77db288ea1ce498b84e3aacf5184f2cf3e07e9bf0cbf33fa644c33e8cc2 · sha256:ef3e9d4378d553db… · /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.

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