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EUVD-2026-23123Published

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…

Exact source revision recorded 28 Oct 2026 05:01:10 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-23123

Published

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 results use dangerouslySetInnerHTML without escaping, and heatmap cell tooltips interpolate le label values without sanitization. With Prometheus v3.x defaulting to UTF-8 metric and label name validation, characters like <, >, and " are now valid in metric names and labels. An attacker who can inject metrics via a compromised scrape target, remote write, or OTLP receiver endpoint can execute arbitrary JavaScript in the browser of any Prometheus user who views the metric in the Graph UI, potentially enabling configuration exfiltration, data deletion, or Prometheus shutdown depending on enabled flags. This issue has been fixed in versions 3.5.2 and 3.11.2. If developers are unable to immediately update, the following workarounds are recommended: ensure that the remote write receiver (--web.enable-remote-write-receiver) and the OTLP receiver (--web.enable-otlp-receiver) are not exposed to untrusted sources; verify that all scrape targets are trusted and not under attacker control; avoid enabling admin or mutating API endpoints (e.g., --web.enable-admin-api or --web.enable-lifecycle) in environments where untrusted data may be ingested; and refrain from clicking untrusted links, particularly those containing functions such as label_replace, as they may generate poisoned label names and values.

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Apr 15, 2026, 10:26:46 PM

dateUpdated: Apr 16, 2026, 2:21:42 PM

6 related source bulletins · separate from aliases

SUSE-SU-2026:2768-1: Security update 5.1.4 for Multi-Linux Manager Client Tools

CVE-2022-21698 · CVE-2026-25680 · CVE-2026-25681 · CVE-2026-27136 · CVE-2026-28374 · CVE-2026-28376 · CVE-2026-28379 · CVE-2026-28380 · CVE-2026-28383 · CVE-2026-33376 · CVE-2026-33377 · CVE-2026-33378 · CVE-2026-33380 · CVE-2026-33381 · CVE-2026-34986 · CVE-2026-39821 · CVE-2026-40179 · CVE-2026-41602 · CVE-2026-42151 · CVE-2026-42154 · CVE-2026-42502 · CVE-2026-42506

openSUSE-SU-2026:10607-1: golang-github-prometheus-prometheus-3.11.2-1.1 on GA media

CVE-2026-40179

SUSE-SU-2026:2774-1: Security update 5.1.4 for Multi-Linux Manager Server

CVE-2022-21698 · CVE-2026-28374 · CVE-2026-28376 · CVE-2026-28379 · CVE-2026-28380 · CVE-2026-28383 · CVE-2026-33376 · CVE-2026-33377 · CVE-2026-33378 · CVE-2026-33380 · CVE-2026-33381 · CVE-2026-34986 · CVE-2026-39821 · CVE-2026-40179 · CVE-2026-41602 · CVE-2026-42151 · CVE-2026-42154 · CVE-2026-42198

msrc_CVE-2026-40179: Prometheus: Stored XSS via metric names and label values in web UI tooltips and metrics explorer

CVE-2026-40179

SUSE-SU-2026:2243-1: Security update 5.0.8 for Multi-Linux Manager Client Tools

CVE-2022-21698 · CVE-2025-29923 · CVE-2026-21724 · CVE-2026-21725 · CVE-2026-26958 · CVE-2026-27606 · CVE-2026-27876 · CVE-2026-27877 · CVE-2026-27879 · CVE-2026-28375 · CVE-2026-33186 · CVE-2026-33375 · CVE-2026-34986 · CVE-2026-40179 · CVE-2026-41602 · CVE-2026-42151 · CVE-2026-42154

WID-SEC-W-2026-3046: IBM Concert: Mehrere Schwachstellen

CVE-2019-19921 · CVE-2021-23337 · CVE-2024-3651 · CVE-2024-39338 · CVE-2024-45590 · CVE-2025-13465 · CVE-2025-15284 · CVE-2025-15599 · CVE-2025-22874 · CVE-2025-47273 · CVE-2025-47907 · CVE-2025-52881 · CVE-2025-53643 · CVE-2025-55184 · CVE-2025-58056 · CVE-2025-58188 · CVE-2025-58189 · CVE-2025-61723 · CVE-2025-61730 · CVE-2025-64649 · CVE-2025-64756 · CVE-2025-67221 · CVE-2025-68121 · CVE-2025-68146 · CVE-2026-0540 · CVE-2026-2327 · CVE-2026-23490 · CVE-2026-23897 · CVE-2026-2391 · CVE-2026-23949 · CVE-2026-24486 · CVE-2026-25528 · CVE-2026-25547 · CVE-2026-25639 · CVE-2026-25990 · CVE-2026-26007 · CVE-2026-26019 · CVE-2026-26996 · CVE-2026-27142 · CVE-2026-27212 · CVE-2026-27699 · CVE-2026-27903 · CVE-2026-27904 · CVE-2026-28684 · CVE-2026-29063 · CVE-2026-29181 · CVE-2026-2950 · CVE-2026-31808 · CVE-2026-31900 · CVE-2026-32274 · CVE-2026-32288 · CVE-2026-32597 · CVE-2026-32630 · CVE-2026-32887 · CVE-2026-32952 · CVE-2026-33186 · CVE-2026-33532 · CVE-2026-33750 · CVE-2026-33814 · CVE-2026-33816 · CVE-2026-33916 · CVE-2026-34043 · CVE-2026-34073 · CVE-2026-34077 · CVE-2026-3520 · CVE-2026-35469 · CVE-2026-35515 · CVE-2026-3627 · CVE-2026-39823 · CVE-2026-39825 · CVE-2026-39826 · CVE-2026-39892 · CVE-2026-39984 · CVE-2026-40175 · CVE-2026-40179 · CVE-2026-40181 · CVE-2026-40190 · CVE-2026-40347 · CVE-2026-41066 · CVE-2026-41182 · CVE-2026-41238 · CVE-2026-41239 · CVE-2026-41240 · CVE-2026-41305 · CVE-2026-41324 · CVE-2026-41425 · CVE-2026-41481 · CVE-2026-41488 · CVE-2026-41602 · CVE-2026-41636 · CVE-2026-42151 · CVE-2026-42154 · CVE-2026-42198 · CVE-2026-42211 · CVE-2026-42338 · CVE-2026-42342 · CVE-2026-42561 · CVE-2026-42577 · CVE-2026-43870 · CVE-2026-44405 · CVE-2026-44431 · CVE-2026-44432 · CVE-2026-44486 · CVE-2026-44487 · CVE-2026-44488 · CVE-2026-44492 · CVE-2026-44494 · CVE-2026-44496 · CVE-2026-44728 · CVE-2026-4539 · CVE-2026-45409 · CVE-2026-45736 · CVE-2026-46625 · CVE-2026-4800 · CVE-2026-4923 · CVE-2026-4926 · CVE-2026-7246 · CVE-2026-8723

Source published
Apr 15, 2026, 10:26:46 PM (timezone not stated)
Source modified
Apr 16, 2026, 2:21:42 PM (timezone not stated)
Observed here
28 Oct 2026 05:01:10 UTC
Source terms
ENISA EUVD · source terms and attribution apply

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 5.3 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

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Sources read 11 Nov 14:12 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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