Vulnerability · Published Oct 20, 2026 · Assigned by GitHub_M
CVE-2026-113661ApostropheCMS: Incomplete CVE-2026-53606: `meta http-equiv=refresh` `content` still ships `javascript:` / `data:` URLs
Medium 5.4
In plain English
A medium-severity cross-site scripting in apostrophe from apostrophecms. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. Prior to sanitize-html 2.18.0, a non-default configuration that allows meta refresh elements and their http-equiv and content attributes can retain unsafe script or redirect destinations embedded in the refresh content value. This issue is fixed in sanitize-html 2.18.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | sanitize-html | 2.18.0 | GHSA-cv27-6wvh-8x7j |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| apostrophecms | apostrophe | < 4.33.0 |
| apostrophecms | sanitize-html | < 2.18.0 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
References
- https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-cv27-6wvh-8x7j x_refsource_CONFIRM
- https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350 x_refsource_MISC
- https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0 x_refsource_MISC