Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive
Affects minaSource GCVE Database
Not known to be exploited · CVSS 9.8 Critical · fixed in 2.0.28 : patch mina as a priority.
Data as of 5 Nov 2026, 00:01 UTC
Contested
Critical score, yet low EPSS after six months- EPSS
- 0.6% chance of exploitation in 30 days – higher than 49% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 2.0.28
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 27 Apr 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 4 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 24.04 LTSminapkg:deb/ubuntu/mina?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSminapkg:deb/ubuntu/mina?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu Pro 22.04 LTSmina2pkg:deb/ubuntu/mina2?arch=source&distro=esm-apps/jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSminapkg:deb/ubuntu/mina?arch=source&distro=focalOther 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 versions 2.0.28, 2.1.11, or 2.2.6 or later, where the vulnerability is fixed by applying the classname allowlist earlier in the code. Applications using IoBuffer.getObject() should ensure they are running on these patched versions. No other mitigations are indicated by the vendor advisory.
Description
Apache MINA's AbstractIoBuffer.resolveClass() method contains a vulnerability where one code path bypasses the classname allowlist, allowing arbitrary code execution. This affects Apache MINA versions 2.0.0 through 2.0.27, 2.1.0 through 2.1.10, and 2.2.0 through 2.2.5. The issue is fixed in versions 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier in the code. Applications using Apache MINA that call IoBuffer.getObject() are vulnerable and should upgrade to the fixed versions.