CVE-2026-100262
CVE-2026-100262 is a high-severity vulnerability in Jetbrains Youtrack with a CVSS 3.x base score of 7.6. 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-863.
Key facts
- Severity: High (CVSS 3.x base score 7.6)
- EPSS exploit prediction: 0% (10th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-863
- Affected product: Jetbrains Youtrack
- Published:
- Last modified:
Description
In JetBrains YouTrack before 2026.2.18991 missing authorisation allowed users with read-only project access to overwrite project notification templates
Frequently asked questions
- What is CVE-2026-100262?
- In JetBrains YouTrack before 2026.2.18991 missing authorisation allowed users with read-only project access to overwrite project notification templates
- How severe is CVE-2026-100262?
- CVE-2026-100262 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
- Is CVE-2026-100262 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-100262?
- CVE-2026-100262 affects Jetbrains Youtrack. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-100262?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2026-100262 published?
- CVE-2026-100262 was published on 2026-09-30 and last updated on 2026-10-02.
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…
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- 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…
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