CVE-2026-28193Network attack vector

Unauthorized access to app permissions endpoint

Published Feb 25, 2026 · Updated Feb 25, 2026

Missing authorization in JetBrains YouTrack before 2025.3.121962 allows remote authenticated users to invoke the app permissions endpoint. JetBrains states only that apps could send requests to this endpoint and has not disclosed the affected handler or omitted authorization check. Reachability requires code running as a YouTrack app in a low-privileged request context; the accessible operations and resulting consequence remain undisclosed.

CVSS severity8.8
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in JetBrains YouTrack before 2025.3.121962 allows remote authenticated users to invoke the app permissions endpoint. JetBrains states only that apps could send requests to this endpoint and has not disclosed the affected handler or omitted authorization check. Reachability requires code running as a YouTrack app in a low-privileged request context; the accessible operations and resulting consequence remain undisclosed.

The record

CVE
CVE-2026-28193
Published
Feb 25, 2026
Updated
Feb 25, 2026
Vendor
JetBrains
Product
YouTrack
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 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 <2025.3.121962

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

JetBrains · YouTrackversion=0 <2025.3.121962

Published CVSS scores

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
8.8JetBrainsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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-862Missing Authorization

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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