CVE-2026-112957
ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 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. This issue is fixed in version 4.34.0.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
4.3
ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 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. This issue is fixed in version 4.34.0.
- Record
CVE-2026-112957- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
EUVDEUVD-2026-105170
4.3
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 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. This issue is fixed in version 4.34.0.
- Record
EUVD-2026-105170- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vh56-5m88-39rq
4.3
ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
Summary
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.
- Record
GHSA-vh56-5m88-39rq- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
NVD
4.3
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 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. This issue is fixed in version 4.34.0.
- Record
CVE-2026-112957- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSV
4.3
ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
ApostropheCMS is an open-source Node.js content management system. Prior to 4.34.0, 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. This issue is fixed in version 4.34.0.
- Record
CVE-2026-112957- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
OSVGHSA-vh56-5m88-39rq
4.3
ApostropheCMS: GET /api/v1/@apostrophecms/page/:id bypasses viewRole restriction and exposes viewPermission-gated fields to lower-privileged users
Summary
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.
- Record
GHSA-vh56-5m88-39rq- CVSS 3.1
- 4.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-862
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
apostrophenpm |
before 4.34.0 | 4.34.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-112957 is a medium vulnerability (CVSS 4.3) in Apostrophecms Apostrophe, published October 20, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.31%, the 23rd percentile. Fixed in apostrophe 4.34.0.
References
github.com/apostrophecms/apostrophe/security/advisories/GHSA-vh56-5m88-39rq
github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498
github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea
github.com/apostrophecms/apostrophe/releases/tag/[email protected]
nvd.nist.gov/vuln/detail/CVE-2026-112957
github.com/advisories/GHSA-vh56-5m88-39rq
github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112957.json
github.com/apostrophecms/apostrophe