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Vulnerability details: VCID-73zw-4p82-vfhn
Vulnerability ID VCID-73zw-4p82-vfhn
Aliases CVE-2026-41635
GHSA-8297-v2rf-2p32
Summary 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 MINA 2.0.0 <= 2.0.27, 2.1.0 <= 2.1.10, and 2.2.0 <= 2.2.5. The problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call  IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-502 Deserialization of Untrusted Data
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-41635.json
epss 0.00059 https://api.first.org/data/v1/epss?cve=CVE-2026-41635
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-8297-v2rf-2p32
cvssv3.1 9.8 https://github.com/apache/mina
generic_textual CRITICAL https://github.com/apache/mina
cvssv3.1 9.8 https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
generic_textual CRITICAL https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
ssvc Track https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
cvssv3.1 9.8 https://nvd.nist.gov/vuln/detail/CVE-2026-41635
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2026-41635
cvssv3.1 9.8 http://www.openwall.com/lists/oss-security/2026/04/27/4
generic_textual CRITICAL http://www.openwall.com/lists/oss-security/2026/04/27/4
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-41635.json
https://api.first.org/data/v1/epss?cve=CVE-2026-41635
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-41635
https://github.com/apache/mina
https://nvd.nist.gov/vuln/detail/CVE-2026-41635
http://www.openwall.com/lists/oss-security/2026/04/27/4
1135167 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1135167
1l91w1mqsb3lwfd504fs045ylxntt2tm https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
2463177 https://bugzilla.redhat.com/show_bug.cgi?id=2463177
RHSA-2026:17668 https://access.redhat.com/errata/RHSA-2026:17668
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-41635.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/apache/mina
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2026-04-27T12:26:05Z/ Found at https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2026-41635
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at http://www.openwall.com/lists/oss-security/2026/04/27/4
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.18822
EPSS Score 0.00059
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:51:09.208276+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/41xxx/CVE-2026-41635.json 38.6.0