CVE-2026-42779: Mina2 · The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches
Affects mina2Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 9.8 Critical · fixed in 2.1.12 : patch mina2 as a priority.
Data as of 9 Nov 2026, 14:18 UTC
- Patch
- Available – fixed in 2.1.12
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 1 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 9 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10mina2pkg:deb/ubuntu/mina2?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 25.10mina2pkg:deb/ubuntu/mina2?arch=source&distro=questingOther threats | Affected
| Fixed in– |
Ubuntu Pro 24.04 LTSmina2pkg:deb/ubuntu/mina2?arch=source&distro=esm-apps/nobleOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Apache MINA to version 2.1.12 or later, or 2.2.7 or later, where the classname allowlist check is correctly applied. This is the official fix resolving the vulnerability. No other mitigations are indicated by the vendor advisory.
Description
Apache MINA versions 2.1.0 through 2.1.11 and 2.2.0 through 2.2.6 contain a vulnerability where the classname allowlist check is bypassed in AbstractIoBuffer.resolveClass(), allowing arbitrary code execution. This occurs because one code branch does not verify the class against the allowlist before calling Class.forName(). The issue is fixed in versions 2.1.12 and 2.2.7 by applying the classname allowlist earlier. Applications using Apache MINA that invoke IoBuffer.getObject() are affected and should upgrade to the fixed versions.