MEDIUM
CVE-2026-30878
CWE-285Published: March 31, 2026· Updated: Apr 1, 2026
5.3
CVSS v3.1
EPSS:0.05%probability of exploitation in 30 daysPercentile:14.6th
Official Description
baserCMS is a website development framework. Prior to version 5.2.3, a public mail submission API allows unauthenticated users to submit mail form entries even when the corresponding form is not accepting submissions. This bypasses administrative controls intended to stop form intake and enables spam or abuse via the API. This issue has been patched in version 5.2.3.
Technical Analysis
CVE-2026-30878 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Vendors & Products
basercms1 product
basercms
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (4)
→
https://basercms.net/security/JVN_20837860Vendor Advisory
→
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3cExploit · Vendor Advisory
→
https://github.com/baserproject/basercms/security/advisories/GHSA-8cr7-r8qw-gp3cExploit · Vendor Advisory
Quick Facts
CVE IDCVE-2026-30878
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-285
CISA KEVNo
EPSS (30d)0.05%
Affected1 vendor
PublishedMar 31, 2026
Related CVEs (CWE-285)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-30878 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.