Is there a public exploit for CVE-2026-64671?

No public exploit for CVE-2026-64671 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-2026-64671?

CVE-2026-64671 scores CVSS 7.2 (v3.1), rated high.

What does CVE-2026-64671 affect?

CVE-2026-64671 affects walinejs waline.

7.2 High

Waline is a comment system with backend support.

CVE-2026-64671

Waline is a comment system with backend support. In versions 3.15.2 and prior, the @waline/client UserList widget builds its DOM by concatenating server-returned commenter fields directly into root.innerHTML with no HTML escaping. The commenter nick and link are stored and returned verbatim by the server (only the comment body is sanitized), and the link field is never sent to the spam filter. So an unauthenticated visitor who posts a comment with link = x"> achieves stored cross-site scripting that executes, with no interaction, in the browser of every visitor to a page that embeds the UserList widget. At time of publication, there are no publicly available patches.

Assessment

CVSS: 7.2 (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: 11 November 2026
Last updated: 11 November 2026
Affected: walinejs · waline
Assigner: GitHub_M

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

At the source

EUVD (ENISA)

References

https://github.com/walinejs/waline/security/advisories/GHSA-7w94-hxwm-gg99

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