CVE-2026-30878: CWE-285: Improper Authorization in baserproject basercms
baserCMS versions prior to 5. 2. 3 contain an improper authorization vulnerability in a public mail submission API. This flaw allows unauthenticated users to submit mail form entries even when the form is configured to reject submissions, bypassing administrative controls. The vulnerability enables potential spam or abuse through the API. A fix addressing this issue was released in version 5. 2. 3.
AI Analysis
Technical Summary
CVE-2026-30878 is an improper authorization vulnerability (CWE-285) in baserproject's baserCMS framework. Before version 5.2.3, the public mail submission API does not properly enforce form submission restrictions, allowing unauthenticated users to submit entries despite administrative settings intended to block such submissions. This bypass can lead to spam or abuse via the mail form API. The vulnerability has been patched in baserCMS version 5.2.3.
Potential Impact
The vulnerability allows unauthorized users to bypass form submission restrictions, potentially resulting in spam or abuse of the mail submission functionality. There is no direct impact on confidentiality or availability reported. The CVSS score of 5.3 reflects a medium severity with impact limited to integrity (unauthorized data submission). No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade baserCMS to version 5.2.3 or later, where this improper authorization vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory.
CVE-2026-30878: CWE-285: Improper Authorization in baserproject basercms
Description
baserCMS versions prior to 5. 2. 3 contain an improper authorization vulnerability in a public mail submission API. This flaw allows unauthenticated users to submit mail form entries even when the form is configured to reject submissions, bypassing administrative controls. The vulnerability enables potential spam or abuse through the API. A fix addressing this issue was released in version 5. 2. 3.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-30878 is an improper authorization vulnerability (CWE-285) in baserproject's baserCMS framework. Before version 5.2.3, the public mail submission API does not properly enforce form submission restrictions, allowing unauthenticated users to submit entries despite administrative settings intended to block such submissions. This bypass can lead to spam or abuse via the mail form API. The vulnerability has been patched in baserCMS version 5.2.3.
Potential Impact
The vulnerability allows unauthorized users to bypass form submission restrictions, potentially resulting in spam or abuse of the mail submission functionality. There is no direct impact on confidentiality or availability reported. The CVSS score of 5.3 reflects a medium severity with impact limited to integrity (unauthorized data submission). No known exploits in the wild have been reported.
Mitigation Recommendations
Upgrade baserCMS to version 5.2.3 or later, where this improper authorization vulnerability has been fixed. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-06T00:04:56.699Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69cb1e82e6bfc5ba1d9722b7
Added to database: 3/31/2026, 1:08:18 AM
Last enriched: 4/7/2026, 10:49:40 AM
Last updated: 5/15/2026, 7:55:01 AM
Views: 53
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.