CVE-2026-100267
CVE-2026-100267 is a medium-severity vulnerability in Jetbrains Youtrack with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1333.
Key facts
- Severity: Medium (CVSS 3.x base score 5.9)
- EPSS exploit prediction: 0% (19th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-1333
- Affected product: Jetbrains Youtrack
- Published:
- Last modified:
Description
In JetBrains YouTrack before 2026.2.19197 reDoS attack was possible via mailbox regex mail-rule filters
Frequently asked questions
- What is CVE-2026-100267?
- In JetBrains YouTrack before 2026.2.19197 reDoS attack was possible via mailbox regex mail-rule filters
- How severe is CVE-2026-100267?
- CVE-2026-100267 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2026-100267 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (19th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-100267?
- CVE-2026-100267 affects Jetbrains Youtrack. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-100267?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2026-100267 published?
- CVE-2026-100267 was published on 2026-09-30 and last updated on 2026-10-01.
References
Affected products (1)
- cpe:2.3:a:jetbrains:youtrack:*:*:*:*:*:*:*:*
More vulnerabilities in Jetbrains Youtrack
- CVE-2026-62422 — Critical (CVSS 10.0): In JetBrains YouTrack before 2026.1.13757, 2025.3.148033, 2025.2.148048, 2025.1.148120, 2024.3.148430, 2024.2.148429…
- CVE-2022-24442 — Critical (CVSS 9.8): JetBrains YouTrack before 2021.4.40426 was vulnerable to SSTI (Server-Side Template Injection) via FreeMarker templates.
- CVE-2021-43185 — Critical (CVSS 9.8): JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.
- CVE-2021-25770 — Critical (CVSS 9.8): In JetBrains YouTrack before 2020.5.3123, server-side template injection (SSTI) was possible, which could lead to code…
- CVE-2019-12852 — Critical (CVSS 9.8): An SSRF attack was possible on a JetBrains YouTrack server. The issue (1 of 2) was fixed in JetBrains YouTrack…
- CVE-2019-12867 — Critical (CVSS 9.8): Certain actions could cause privilege escalation for issue attachments in JetBrains YouTrack. The issue was fixed in…
All CVEs affecting Jetbrains Youtrack →
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