CVE-2026-75047Network attack vectorHinoki check available

Service interrupt via import decompression bomb

Published Aug 17, 2026 · Updated Aug 17, 2026

Denial of service in JetBrains YouTrack before 2026.2.18177 allows remote authenticated users to interrupt service via import data. The import endpoint accepts a highly compressed archive and decompresses attacker-supplied content without sufficient expansion limits, letting a decompression bomb consume CPU or memory. Exploitation requires valid application access because the published CVSS vector has PR:L, and the described consequence is availability loss rather than code execution or data disclosure.

CVSS severity6.5
Medium
EPSS probability0.88%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in JetBrains YouTrack before 2026.2.18177 allows remote authenticated users to interrupt service via import data. The import endpoint accepts a highly compressed archive and decompresses attacker-supplied content without sufficient expansion limits, letting a decompression bomb consume CPU or memory. Exploitation requires valid application access because the published CVSS vector has PR:L, and the described consequence is availability loss rather than code execution or data disclosure.

The record

CVE
CVE-2026-75047
Published
Aug 17, 2026
Updated
Aug 17, 2026
Vendor
JetBrains
Product
YouTrack
Classifications
CWE-409, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 17, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.2.18177

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JetBrains · YouTrackversion=0 <2026.2.18177

Published CVSS scores

6.5JetBrains s.r.o.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-409Improper Handling of Highly Compressed Data (Data Amplification)
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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