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Vulnerability record · CVE-2019-3826 · published 26 March 2019

CVE-2019-3826: Prometheus cross-site scripting vulnerability

Prometheus · Prometheus

A stored, DOM based, cross-site scripting (XSS) flaw was found in Prometheus before version 2.7.1. An attacker could exploit this by convincing an authenticated user to visit a crafted URL on a Prometheus server, allowing for the execution and persistent storage of arbitrary scripts.

6.1 CVSS 3.0 Medium EPSS 2.6% · top 15.3% CWE-79 · Cross-site scripting
6.1CVSS 3.0 base score, v2 4.3
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

A stored, DOM based, cross-site scripting (XSS) flaw was found in Prometheus before version 2.7.1. An attacker could exploit this by convincing an authenticated user to visit a crafted URL on a Prometheus server, allowing for the execution and persistent storage of arbitrary scripts.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory
https://advisory.checkmarx.net/advisory/CX-2019-4297
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3826 Issue TrackingPatchThird Party Advisory
https://github.com/prometheus/prometheus/commit/62e591f9 PatchThird Party Advisory
https://github.com/prometheus/prometheus/pull/5163 PatchThird Party Advisory
https://lists.apache.org/thread.html/r48d5019bd42e0770f7e5351e420a63a41ff1f16924942442c6aff6a8%40%3Ccommits.zookeeper.ap
https://lists.apache.org/thread.html/r8e3f7da12bf5750b0a02e69a78a61073a2ac950eed7451ce70a65177%40%3Ccommits.zookeeper.ap
https://lists.apache.org/thread.html/rdf2a0d94c3b5b523aeff7741ae71347415276062811b687f30ea6573%40%3Ccommits.zookeeper.ap
https://access.redhat.com/errata/RHBA-2019:0327 Third Party Advisory
https://advisory.checkmarx.net/advisory/CX-2019-4297
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3826 Issue TrackingPatchThird Party Advisory
https://github.com/prometheus/prometheus/commit/62e591f9 PatchThird Party Advisory
https://github.com/prometheus/prometheus/pull/5163 PatchThird Party Advisory
https://lists.apache.org/thread.html/r48d5019bd42e0770f7e5351e420a63a41ff1f16924942442c6aff6a8%40%3Ccommits.zookeeper.ap
https://lists.apache.org/thread.html/r8e3f7da12bf5750b0a02e69a78a61073a2ac950eed7451ce70a65177%40%3Ccommits.zookeeper.ap
https://lists.apache.org/thread.html/rdf2a0d94c3b5b523aeff7741ae71347415276062811b687f30ea6573%40%3Ccommits.zookeeper.ap

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Source: NIST National Vulnerability Database (record CVE-2019-3826), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.