CVE WatchNov 11, 2026

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

CVSS

9.3

Critical

EPSS

0.4%

p30

KEV

—

Exploit Today

0-100

Published: Nov 11, 2026 · Last modified: Nov 11, 2026 · CWE-79 · CWE-116

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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

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