EUVD-2026-60258
GHSA-vw8w-wwww-3834
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Local IDE attack surface (AV:L), no OS privileges needed (PR:N), user must trigger Quick Documentation (UI:R), limited C/I impact within IDE process only.
Primary rating from Vendor (jetbrains).
CVSS VectorVendor: jetbrains
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Lifecycle Timeline
2DescriptionCVE.org
In JetBrains PyCharm before 2026.2.1 code execution via Quick Documentation was possible
AnalysisAI
Cross-site scripting in JetBrains PyCharm's Quick Documentation rendering feature (before version 2026.2.1) enables code execution within the IDE process when a developer inspects documentation for a symbol from a maliciously crafted source. Attackers - including supply-chain adversaries embedding malicious HTML or JavaScript into Python package docstrings - can achieve code execution in PyCharm's local process context once the victim triggers Quick Documentation on an affected symbol. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerability requires the victim to be running JetBrains PyCharm prior to version 2026.2.1 on their local workstation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS base score of 4.4 (Medium) reflects a limited-impact, local-vector, user-interaction-required vulnerability. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A threat actor publishes a malicious Python package to PyPI with JavaScript or HTML payload embedded in one or more function or class docstrings. A developer installs the package, opens their project in a vulnerable version of PyCharm, and hovers over or presses the Quick Documentation shortcut on a symbol from the malicious package. … |
| Remediation | Upgrade JetBrains PyCharm to version 2026.2.1 or later, which contains the vendor-released fix per the JetBrains security advisory at https://www.jetbrains.com/privacy-security/issues-fixed/. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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