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CVE-2026-113659Published

ApostropheCMS: Client-side Prototype Pollution in apos.http.parseQuery leading to DOM-based XSS against authenticated users

Exact source revision recorded 28 Oct 2026 15:46:50 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-113659

Published

ApostropheCMS is an open-source Node.js content management system. Prior to 4.33.0, an unauthenticated attacker can send a crafted link whose query string is automatically parsed by apos.http.parseQuery when an authenticated victim loads a page with the admin bundle. The parser accepts the special __proto__, constructor, and prototype path keys, allowing browser prototype mutation that can reach an unsafe DOM sink and execute script in the victim's session; anonymous visitors do not load the affected admin context. This issue is fixed in version 4.33.0.

Source published
20 Oct 2026 17:00:59 UTC
Source modified
28 Oct 2026 13:59:49 UTC
Observed here
28 Oct 2026 15:46:50 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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Sources read 31 Oct 07:00 UTC · 272 of 272 readable · 270 fully read · documentation 469/469 current

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