CVE-2026-17033: CVE-2026-17033 CVE Record
Vulnerability summary
CVE-2026-17033 is a medium (CVSS 6.8) vulnerability in grafana grafana oss. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 12.3% of scored vulnerabilities.
Not severe (CVSS 6.8, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 5Timeline
- 24-08-2026PublishedVulnerability first disclosed.
- 27-08-2026Last modifiedVulnerability information updated.
Description
An authenticated attacker with Editor access or alert.instances.external:write can submit an external Alertmanager alert containing a controlled generatorURL. The attacker is authorized to create the alert, but not to execute script in another user's Grafana session. Grafana renders alert.generatorURL directly as the Alert Details See source LinkButton href without URL-scheme sanitization or a safe-protocol allowlist. The click interceptor's :// heuristic can be bypassed by placing :// inside a JavaScript comment. When a user with read access clicks See source, the browser executes attacker-controlled JavaScript in the Grafana origin with the clicking user's permissions.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST6.8MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:L
EPSS trend
Probability
0.22%
Chance of exploitation in the next 30 days
Percentile
12%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.22% on 04-10-2026
Known exploited
Compare KEV catalogsNot in the CISA KEV catalog.
Not in the ENISA CNW catalog.
Not in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.
Chainguard6 products
- grafana-11.6All versions (No fix recorded)
- grafana-12.1All versions (No fix recorded)
- grafana-12.2All versions (No fix recorded)
- grafana-12.3All versions (No fix recorded)
- grafana-12.4< 12.4.10-r0
Wolfi3 products
- grafana-12.3All versions (No fix recorded)
- grafana-12.4< 12.4.10-r0
- grafana-13.0All versions (No fix recorded)
Grafana1 product
- grafana oss≤ 12.3.11 | ≥ 12.4.0, ≤ 12.4.9 | ≥ 13.0.0, ≤ 13.0.7
3 vendors · 10 products
References
1 links- grafana.com/security/security-advisories/cve-2026-17033Vendor Advisory