Skip to main content
VulnerabilityPublished

CVE-2026-41635: Apache MINA · Deserialization of Untrusted Data

Affects Apache MINASource CVE Database V5

0
Compare

Not known to be exploited · CVSS 9.8 Critical.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.

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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 27 Apr 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 29 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Apache Software FoundationApache MINAAffected
  • >=2.2.0 <=2.2.5
  • >=2.1.0 <=2.1.10
  • >=2.0.0 <=2.0.27
Fixed in–
MavenApache Software Foundation/org.apache.mina:mina-corepkg:maven/Apache Software Foundation/org.apache.mina:mina-coreOther threatsAffected
  • >=2.2.0 <=2.2.5
  • >=2.1.0 <=2.1.10
  • >=2.0.0 <=2.0.27
Fixed in–
Mavenorg.apache.mina/mina-corepkg:maven/org.apache.mina/mina-coreOther threatsAffected
  • =2.0.0
  • =2.1.0
  • =2.2.0
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Users should upgrade Apache MINA to version 2.0.28, 2.1.11, or 2.2.6 or later where the vulnerability is fixed by enforcing the classname allowlist earlier. No other mitigations or temporary fixes are documented. Patch status is not explicitly stated in a vendor advisory but the fix is included in these versions. Users should verify upgrade paths and test accordingly.

Description

CVE-2026-41635 is a critical deserialization vulnerability in Apache MINA's AbstractIoBuffer.resolveClass() method. The vulnerability arises because one code path for static classes or primitive types bypasses the classname allowlist, enabling arbitrary code execution. This affects Apache MINA versions 2.0.0 through 2.0.27, 2.1.0 through 2.

References

Community reviews

Loading reviews…