DailyCVE@dailycve
🔴 ApostropheCMS, Inadequate Authorization, #CVE-2026-63670 (Critical) -DC-Oct2026-3446 https://dailycve.com/apostrophecms-inadequate-authorization-cve-2026-63670-critical-dc-oct2026-3446/
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CVE-2026-63670
LOWCVSS 6.1 · MEDIUMImmediate actions
- Track advisory updates for patch or workaround availability
Recommended action window: Monitor and triage in normal cycle
NVD description
ApostropheCMS is an open-source Node.js content management system. Prior to 2.17.6, sanitizeHtml() can pass disallowed executable markup through packages/sanitize-html/index.js when textarea or xmp is included in allowedTags because a literal solidus after the raw-text end-tag name is treated as text by htmlparser2 and the ontext handler emits that content without escaping, while a browser parses the following img onerror markup as active HTML. This issue is fixed in version 2.17.6.
0.0/ 10 priority
Sources & remediation
Other references
- https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725
- https://github.com/apostrophecms/apostrophe/pull/5501
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw
Weakness type (CWE)
CWE-79
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE