Is there a public exploit for CVE-2026-123301?

No public exploit for CVE-2026-123301 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-123301?

CVE-2026-123301 scores CVSS 8.2 (v3.1), rated high.

What does CVE-2026-123301 affect?

CVE-2026-123301 affects JetBrains IntelliJ IDEA.

8.2 High

In JetBrains IntelliJ IDEA before 2026.3 dOM-based XSS in the OpenAPI preview error view was possible

CVE-2026-123301

Assessment

CVSS: 8.2 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 6 November 2026
Last updated: 6 November 2026
Affected: JetBrains · IntelliJ IDEA
Assigner: JetBrains

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

At the source

EUVD (ENISA)

References

https://www.jetbrains.com/privacy-security/issues-fixed/

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