Is there a public exploit for CVE-2026-48164?

No public exploit for CVE-2026-48164 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-2026-48164?

CVE-2026-48164 scores CVSS 4.7 (v3.1), rated medium.

4.7 Medium

Collabora Online is a collaborative online office suite based on LibreOffice technology.

CVE-2026-48164

Collabora Online is a collaborative online office suite based on LibreOffice technology. Prior to 24.04.18 and 25.04.11, the hostsessionid query/form parameter is substituted into the cool.html editor page without HTML encoding, unlike parameters passed through the existing variable-encoding mechanism. An attacker who induces a victim to load a crafted URL can inject HTML and, in the absence of an effective Content Security Policy, execute scripts in the Collabora Online iframe's origin, exposing the session authentication token and page contents. A reverse proxy that preserves the Content Security Policy header sent by coolwsd mitigates the script-execution scenario. This issue is fixed in versions 24.04.18 and 25.04.11.

Assessment

CVSS: 4.7 (v3.1)
Severity: Medium
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 30 October 2026
Last updated: 30 October 2026
Weakness: CWE-79
Assigner: security-advisories@github.com

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

At the source

References

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