CVE-2026-59791: jetbrains youtrack
Analyzed
Published 10-07-2026Last modified 10-07-2026
Vulnerability summary
CVE-2026-59791 is a low (CVSS 3.5) vulnerability in jetbrains youtrack. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 12.9% of scored vulnerabilities.
CVSS score
3.5/10
010
Low · v3.1 (CVE.org)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 10-07-2026PublishedVulnerability first disclosed.
- 10-07-2026Last modifiedVulnerability information updated.
Description
In JetBrains YouTrack before 2026.2.17012 cSS injection via Mermaid diagram rendering was possible
CVSS metrics
2 scores · 2 sources · 1 versionLow 3.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:NSourcesAll 2 agree
- NVDNIST3.5LowCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.23% on 22-09-2026
22-09-202622-10-2026
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
Jetbrains1 product
- youtrack< 2026.2.17012
1 vendor · 1 product
References
1 links- www.jetbrains.com/privacy-security/issues-fixed/Vendor Advisory