How severe is CVE-2026-103488?

CVE-2026-103488 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2026-103488 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-103488?

CVE-2026-103488 affects Jetbrains Youtrack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-103488?

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-2026-103488 published?

CVE-2026-103488 was published on 2026-10-01 and last updated on 2026-10-05.

CVE-2026-103488

CVE-2026-103488 is a high-severity vulnerability in Jetbrains Youtrack with a CVSS 3.x base score of 7.1. 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 7.1)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-863
Affected product: Jetbrains Youtrack
Published: 2026-10-01
Last modified: 2026-10-05

Description

In JetBrains YouTrack before 2026.2.19422 missing authorisation allowed authenticated users to add themselves to project teams and access restricted issues

Frequently asked questions

What is CVE-2026-103488?: In JetBrains YouTrack before 2026.2.19422 missing authorisation allowed authenticated users to add themselves to project teams and access restricted issues
How severe is CVE-2026-103488?: CVE-2026-103488 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
Is CVE-2026-103488 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-103488?: CVE-2026-103488 affects Jetbrains Youtrack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-103488?: 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-2026-103488 published?: CVE-2026-103488 was published on 2026-10-01 and last updated on 2026-10-05.

References

https://www.jetbrains.com/privacy-security/issues-fixed/

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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