CVE Explorer
CVE-2026-42779
The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:
Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.
The fix checks if the class is present in the accepted class filter before calling Class.forName().
Affected versions are Apache
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"org.apache.mina:mina-core","product":"Apache MINA","vendor":"Apache Software Foundation","versions":[{"lessThanOrEqual":"2.2.6","status":"affected","version":"2.2.X","versionType":"semver"},{"lessThanOrEqual":"2.1.11","status":"affected","version":"2.1.X","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:94a903875ac45c7014956e51fbc46ebbe8185e262e57b5ffb5596568e1af1d88 · sha256:66799f6e5b5254bd… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:94a903875ac45c7014956e51fbc46ebbe8185e262e57b5ffb5596568e1af1d88 · sha256:66799f6e5b5254bd… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-502","description":"CWE-502 Deserialization of Untrusted Data","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:94a903875ac45c7014956e51fbc46ebbe8185e262e57b5ffb5596568e1af1d88 · sha256:66799f6e5b5254bd… · /containers/cna/problemTypes/0/descriptions/0
Source references
1 source assertion{"tags":["vendor-advisory"],"url":"https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:94a903875ac45c7014956e51fbc46ebbe8185e262e57b5ffb5596568e1af1d88 · sha256:66799f6e5b5254bd… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.