Is there a public exploit for CVE-2026-64670?

No public exploit for CVE-2026-64670 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-2026-64670?

CVE-2026-64670 scores CVSS 9.3 (v3.1), rated critical.

What does CVE-2026-64670 affect?

CVE-2026-64670 affects walinejs waline.

9.3 Critical

Waline is a comment system with backend support.

CVE-2026-64670

Waline is a comment system with backend support. In versions 3.15.2 and prior, @waline/client renders the comment editor's live preview with marked and no sanitizer (utils/markdown.ts), and the preview is injected with v-html. When a comment is edited, the editor is seeded with the comment's raw, un-sanitized body (orig). Only administrators and the comment owner can edit. So an administrator who clicks Edit on an attacker's comment renders that attacker's raw HTML in their own session: an unauthenticated commenter achieves privilege-escalation stored XSS against a moderator with a single Edit click. At time of publication, there are no publicly available patches.

Assessment

CVSS: 9.3 (v3.1)
Severity: Critical
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:R/S:C/C:H/I:H/A:N

At the source

EUVD (ENISA)

References

https://github.com/walinejs/waline/security/advisories/GHSA-crj3-q72p-ggqm

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