Vulnerability · Published Feb 9, 2026 · Assigned by twcert
CVE-2026-2234HGiga｜C&Cm@il - Missing Authentication
Critical 9.1
In plain English
A critical-severity missing authentication in C&Cm@il package olln-base from HGiga. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.5%top 56.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
C&Cm@il developed by HGiga has a Missing Authentication vulnerability, allowing unauthenticated remote attackers to read and modify any user's mail content.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| HGiga | C&Cm@il package olln-base | 0 – before 7.0-978 |
Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- https://www.twcert.org.tw/tw/cp-132-10703-3d02f-1.html third-party-advisory
- https://www.twcert.org.tw/en/cp-139-10704-d5aba-2.html third-party-advisory