Vulnerability · Published Sep 18, 2026 · Assigned by redhat
CVE-2026-10832Org.wildfly.security/wildfly-elytron-asn1: unbounded memory allocation in wildfly elytron asn.1 derdecoder via crafted der payload
Medium 5.9
In plain English
A medium-severity resource allocation without limits in Red Hat JBoss Enterprise Application Platform 8.1.8.GA from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities).
Official description
A flaw was found in the DERDecoder class within wildfly-elytron-asn1. A remote attacker can exploit this resource exhaustion vulnerability by sending a specially crafted DER (Distinguished Encoding Rules) payload. The decoder attempts to allocate excessive memory based on an inflated length value without proper validation, leading to Java Virtual Machine (JVM) memory exhaustion. This results in a remote Denial of Service (DoS) for services that process untrusted DER/ASN.1 input, including SASL (Simple Authentication and Security Layer) authentication mechanisms and X.500 certificate principal parsing paths.
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- RHSA-2026:70228 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:70229 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:70230 vendor-advisory, x_refsource_REDHAT
- RHSA-2026:70277 vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-10832 vdb-entry, x_refsource_REDHAT
- RHBZ#2484703 issue-tracking, x_refsource_REDHAT