CVE-2025-54527Network attack vector

Data access via widget sandbox popup escape

Published Jul 28, 2025 · Updated Jul 28, 2025

Improper iframe restriction in JetBrains YouTrack before the listed fixed builds allows remote attackers to escape widget sandbox limits. The iframe configuration permits widget-created popups to bypass restrictions intended to confine the widget, although JetBrains has not disclosed the specific attribute or code path. Exploitation requires user interaction with widget content and can expose or modify data available to the escaped popup context.

CVSS severity6.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper iframe restriction in JetBrains YouTrack before the listed fixed builds allows remote attackers to escape widget sandbox limits. The iframe configuration permits widget-created popups to bypass restrictions intended to confine the widget, although JetBrains has not disclosed the specific attribute or code path. Exploitation requires user interaction with widget content and can expose or modify data available to the escaped popup context.

The record

CVE
CVE-2025-54527
Published
Jul 28, 2025
Updated
Jul 28, 2025
Vendor
JetBrains
Product
YouTrack
Classifications
CWE-1021, CAPEC-222
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 28, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 2025Record 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 <2025.2.86935, 2025.2.87167, 2025.3.87341, 2025.3.87344

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JetBrains · YouTrackversion=0 <2025.2.86935, 2025.2.87167, 2025.3.87341, 2025.3.87344

Published CVSS scores

6.1JetBrainsCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1021Improper Restriction of Rendered UI Layers or Frames
CAPEC-222iFrame Overlay

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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