# CVE-2026-93462: baserCMS missing authentication for blog comments API

Source: https://junglewise.ai/threats/cve-2026-93462-missing-authentication-for-critical-function-vulnerability-exists  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-30. Updated: 2026-09-30  
License: CC BY 4.0 with a link back

CVE-2026-93462 · Severity: medium · CVSS 5.3 · Published 2026-09-30

baserCMS is a content management system used to build and manage websites. The blog comments API allows an unauthenticated attacker to retrieve unpublished comments and commenter email addresses, exposing sensitive information that should remain private until approval. An attacker can exploit this without any credentials or user interaction to harvest email addresses and view comments pending moderation.

Technologies: [baserCMS User Community baserCMS](https://junglewise.ai/threats/technologies/basercms-user-community-basercms). Vendors: [baserCMS User Community](https://junglewise.ai/threats/vendors/basercms-user-community).

## Quick answers

**Is CVE-2026-93462 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93462 being exploited in the wild.

**How severe is CVE-2026-93462?** Medium severity, with a CVSS score of 5.3, published 30 September 2026.

**Which products and versions are affected?** baserCMS User Community baserCMS 5.0.0 to 5.4.0.

**Is there a fix for CVE-2026-93462?** A patch was published on 2026-09-25: baserCMS 5.3.1 and 5.4.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-93462 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-93462?** Check whether you run baserCMS User Community baserCMS 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.

## Technical details

Missing authentication in the baserCMS public blog comments API (CWE-306) permits unauthenticated remote attackers to query and retrieve unapproved blog comments and associated commenter email addresses. Attack vector is network-based with no preconditions; the API accepts unauthenticated requests. A fix is available in baserCMS 5.3.1 and 5.4.1 or later.

## Affected products

- baserCMS User Community baserCMS 5.0.0 to 5.4.0

## Timeline

- 2026-09-24: disclosed
- 2026-09-25: patched: baserCMS 5.3.1 and 5.4.1 released

## References

- [https://basercms.net/security/JVN_14353754](https://basercms.net/security/JVN_14353754)
- [https://jvn.jp/en/jp/JVN14353754](https://jvn.jp/en/jp/JVN14353754)

## Related threats

- [baserCMS stored cross-site scripting in custom content descriptions](https://junglewise.ai/threats/cve-2026-93464-stored-cross-site-scripting-via-custom-content-descriptions)
- [baserCMS script validation bypass cross-site scripting](https://junglewise.ai/threats/cve-2026-93463-cross-site-scripting-via-script-validation-bypass-exists-in)
- [baserCMS stored cross-site scripting in email form fields](https://junglewise.ai/threats/cve-2026-93460-stored-cross-site-scripting-via-appended-strings-in-email-form)