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GHSA-vh56-5m88-39rq
apostropheSummary
The getOne REST endpoint for pages does not apply viewRole type-level restrictions
or viewPermission field-level redaction. An editor-level user who knows a document
_id can read the full content of admin-only pages and their privileged fields, while
the getAll endpoint correctly enforces both restrictions.
Details
Finding 3 — viewRole bypass:
modules/@apostrophecms/page/index.js exposes getRestQuery(req, omitPermissionCheck = false). The getAll path calls publicApiCheckAsync and threads the full query builder
pipeline including viewRole filtering. The getOne path uses a divergent code path
that skips this pipeline.
A page type declared with viewRole: 'admin' is inaccessible via GET /api/v1/@apostrophecms/page?type=secretPage (returns 403 to an editor) but is fully
returned by GET /api/v1/@apostrophecms/page/:id:en:published to the same editor.
Finding 4 — viewPermission field leak:
Fields decorated with viewPermission: { action: 'edit', type: '@apostrophecms/page' }
are stripped by removeForbiddenFields in the getAll path but are returned verbatim
in getOne. An editor who knows any document _id can read all
viewPermission-restricted fields.
PoC
# Log in as editor, get session jar
EDITOR_JAR="..."
# getAll — correctly blocked
curl -b "$EDITOR_JAR" \
"http://TARGET/api/v1/@apostrophecms/page?type=secretPage"
# → 403 Forbidden
# getOne — bypassed, returns full document including viewPermission fields
curl -b "$EDITOR_JAR" \
"http://TARGET/api/v1/@apostrophecms/page/ADMIN_PAGE_ID:en:published"
# → 200 OK, full doc including secretField value
Impact
Editors can read the full content of any page — including those restricted to admins via
viewRole — if they know or can guess the _id. Sensitive field values gated by
viewPermission are also fully exposed. This breaks the content access control model
for any site using these decorators.
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The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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