Is there a public exploit for CVE-2026-123364?

No public exploit for CVE-2026-123364 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-2026-123364?

CVE-2026-123364 scores CVSS 2.4 (v4.0), rated low.

What does CVE-2026-123364 affect?

CVE-2026-123364 affects OctoPrint.

2.4 Low

OctoPrint: Stored XSS via saved connection parameters

CVE-2026-123364

Impact OctoPrint versions 2.0.0rc1 up until version 2.0.0rc6 are susceptible to cross-site scripting via a specially crafted default port or baudrate setting on the bundled Serial Connector plugin, supplied via the API as new defaults during a connect request. Patches The vulnerability is patched in 2.0.0rc7. Workaround Check config.yaml for Javascript fragments in printerConnection.preferred.parameters.port or printerConnection.preferred.parameters.baudrate. If found, remove them. You can check who of your users had access to your instance since you flashed 2.0.0rc1 or above via auth.log. Credits This vulnerability was discovered and responsibly disclosed to OctoPrint by "mahn-don". Timeline 2026-10-14: Report received 2026-10-14: Report acknowledged 2026-10-14: Report verified 2026-10-14: Fix ready for 2.0.0rc7 2026-10-20: CVE requested

Assessment

CVSS: 2.4 (v4.0)
Severity: Low
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 10 November 2026
Last updated: 10 November 2026
Affected: OctoPrint
Weakness: CWE-79

CVSS vectorCVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:N

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