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PatchSiren cyber security CVE debrief

CVE-2026-75047 JetBrains CVE debrief

A denial-of-service (DoS) attack was possible in JetBrains YouTrack before version 2026.2.18177 via a decompression bomb in the import endpoint. This vulnerability, CVE-2026-75047, is a medium-severity issue that could lead to potential disruption of YouTrack service, necessitating verification of YouTrack version and exposure, as well as assessment of potential impact on incident response and support teams. Defenders should prioritize verifying exposure and assessing potential impact on YouTrack deployments.

Vendor
JetBrains
Product
YouTrack
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-08-17
Original CVE updated
2026-09-15
Advisory published
2026-08-17
Advisory updated
2026-09-15

Who should care

Defenders responsible for JetBrains YouTrack deployments, vulnerability management teams, and security teams should assess exposure and potential impact. This includes reviewing import endpoint configurations, implementing mitigations for decompression bomb attacks, and verifying YouTrack version and exposure. Potential disruption of YouTrack service and impact on incident response and support teams are key concerns.

Why it matters

CVE-2026-75047 is a medium-severity DoS vulnerability in JetBrains YouTrack, requiring verification of exposure and potential impact on deployments.

  • Potential disruption of YouTrack service
  • Need for verification of YouTrack version and exposure
  • Potential impact on incident response and support teams

Technical summary

CVE-2026-75047 is a DoS vulnerability in JetBrains YouTrack before 2026.2.18177, exploitable via a decompression bomb in the import endpoint. This medium-severity issue requires verification of exposure and potential impact on deployments. Defenders should prioritize verifying exposure and assessing potential impact on YouTrack deployments without making unsupported claims.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on YouTrack deployments.

Recommended defensive actions

  • Verify YouTrack version and assess exposure
  • Review import endpoint configurations
  • Implement mitigations for decompression bomb attacks

Evidence notes

Evidence from the CVE Program and NVD indicates a DoS vulnerability in JetBrains YouTrack before 2026.2.18177. The CVE record was published on 2026-08-17T16:17:51.757Z and has not been modified since then. The vulnerability is exploitable via a decompression bomb in the import endpoint, and defenders should verify exposure and assess potential impact. Limited source detail is available, and explicit evidence-limit language and defensive verification tasks are necessary.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-75047 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-75047

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-75047 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-75047

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.