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ApostropheCMS sanitize-html: unbounded recursion when re-sanitizing the fallback of a discarded iframe (stack overflow, nestingLimit not enforced)

Type: advisorySource: Official CVE List1 source record

ApostropheCMS is an open-source Node.js content management system. In sanitize-html 2.18.0, when an is not allowed and disallowedTagsMode is 'discard' (the defaults), its raw-text content is re-sanitized by a recursive call to sanitizeHtml(text, options). The recursion has no bound and starts each nested call with a fresh state. This vulnerability is fixed in 2.18.1.

Announced Source revision 1
Original source ↗

CVE-2026-113650

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-113650

apostrophe

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

sanitize-html

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "vendor": "apostrophecms",
    "product": "apostrophe",
    "versions": [
      {
        "status": "affected",
        "version": "< 4.34.0"
      }
    ]
  },
  {
    "vendor": "apostrophecms",
    "product": "sanitize-html",
    "versions": [
      {
        "status": "affected",
        "version": ">= 2.18.0, < 2.18.1"
      }
    ]
  }
]
Related CVEs
CVE-2026-113650

Source reference: /cveMetadata/cveId

Publisher severity

medium

Source reference: /containers/cna/metrics

Event
#42377 · Revision 1
Added to Heist Feed
Publisher date
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