SB20260817103 - Multiple vulnerabilities in PyCharm

Description

This security bulletin contains information about 2 vulnerabilities.

1) Missing Authentication for Critical Function (CVE-ID: CVE-2026-75060)

CWE-ID: CWE-306 - Missing Authentication for Critical Function

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to missing authentication for Jupyter MCP tools when handling unauthenticated access. A remote attacker can access exposed Jupyter MCP tools without authentication to execute arbitrary code.

2) Cross-site scripting (CVE-ID: CVE-2026-75059)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to cross-site scripting in Quick Documentation when rendering crafted documentation content. A remote attacker can inject crafted content to execute arbitrary code.

Remediation

Install update from vendor's website.

References

• https://www.jetbrains.com/privacy-security/issues-fixed/#c3083d35dd3c3727f06e25e64a45d0bb
• https://www.jetbrains.com/privacy-security/issues-fixed/#0b5a664d67445fa0b4cc250954066057