VDB
CVE-2026-63670
CVE-2026-63670
PUBLISHED
CVSS 6.1 MEDIUM
Reported by GitHub_M · Published August 17, 2026
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.
Risk Scores
CVSS 3.1
6.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| apostrophecms | apostrophe | < 2.17.6 |
| chainguard | tensorflow-gpu-jupyter | 0 |
| apostrophecms | apostrophe | 0 |
| chainguard | jupyter-base-notebook | 0 |
| wolfi | jupyter-base-notebook | 0 |
| npm | sanitize-html | 0 |
Timeline
- Aug 17, 2026 CVE Published
- Aug 18, 2026 CVE Updated
- Aug 22, 2026 Coalition ESS Score
- Aug 24, 2026 EPSS Score
- Sep 4, 2026 EPSS Score
- Sep 5, 2026 Security Advisory
- Sep 10, 2026 EPSS Score
- Sep 12, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 18, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
References
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw x_refsource_CONFIRM
- https://github.com/apostrophecms/apostrophe/pull/5501 x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725 x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2026-63670 advisory
- https://github.com/advisories/GHSA-jxwj-j7wr-gfrw advisory