# CVE-2026-112954: ApostropheCMS public REST API information disclosure via search and sort oracles

Source: https://junglewise.ai/threats/cve-2026-112954-apostrophecms-is-an-open-source-node-js-content-management  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-112954 · Severity: medium · CVSS 5.3 · Published 2026-10-20

ApostropheCMS is an open-source content management system for Node.js. A flaw in its public REST API allows unauthenticated attackers to infer the existence and values of fields that are supposed to be hidden through search and sort functionality, potentially exposing sensitive data like email addresses or internal identifiers that administrators intended to keep private.

Technologies: [ApostropheCMS Apostrophe](https://junglewise.ai/threats/technologies/apostrophecms-apostrophe), [apostrophe (npm)](https://junglewise.ai/threats/technologies/apostrophe). Vendors: [ApostropheCMS](https://junglewise.ai/threats/vendors/apostrophecms), [npm](https://junglewise.ai/threats/vendors/npm).

## Quick answers

**Is CVE-2026-112954 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-112954 being exploited in the wild.

**How severe is CVE-2026-112954?** Medium severity, with a CVSS score of 5.3, published 20 October 2026.

**Which products and versions are affected?** ApostropheCMS Apostrophe before 4.34.0; apostrophe (npm) < 4.34.0, SEMVER:introduced=0,fixed=4.34.0.

**Is there a fix for CVE-2026-112954?** Yes. apostrophe (npm): upgrade to 4.34.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-112954 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-112954?** Check whether you run ApostropheCMS Apostrophe or apostrophe (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- apostrophe (npm): upgrade to 4.34.0 or later

  ```sh
  npm install apostrophe@4.34.0
  ```


## Technical details

The vulnerability exists in types using publicApiProjection before version 4.34.0, where searchable and sortable fields excluded from the projection can be discovered through search membership and sort ordering oracles. While returned fields remain filtered by the projection, an attacker can use boolean search queries or sort key responses to infer targeted information about hidden values without gaining unrestricted field access.

## Affected products

- ApostropheCMS Apostrophe before 4.34.0

## Identifiers

- CVE-2026-112954
- GHSA-rqgm-cfrp-4hx8

## Timeline

- 2026-10-20: disclosed
- 2026-10-14: patched

## References

- [https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498](https://github.com/apostrophecms/apostrophe/commit/06e4b377f3c360f9e89c32dccd7e505ad5ddf498)
- [https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea](https://github.com/apostrophecms/apostrophe/commit/40b989b1a9dd23d30029b8ce7668634265cfe5ea)

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- [ApostropheCMS page REST API authorization bypass](https://junglewise.ai/threats/cve-2026-113670-apostrophecms-page-rest-api-authorization-bypass)
- [ApostropheCMS cross-domain session token in URL confers session takeover](https://junglewise.ai/threats/cve-2026-113669-apostrophecms-cross-domain-session-token-in-url-confers-session)
- [ApostropheCMS REST route authorization bypass in locales endpoint](https://junglewise.ai/threats/cve-2026-113668-apostrophecms-id-locales-rest-route-omits-the-public-api)