CVE-2022-25761

The package open62541/open62541 before 1.2.5, from 1.3-rc1 and before 1.3.1 are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.

• CWE-770

• https://github.com/open62541/open62541/commit/b79db1ac78146fc06b0b8435773d3967de2d659cPatch, Third Party Advisory
• https://github.com/open62541/open62541/pull/5173Patch, Third Party Advisory
• https://github.com/open62541/open62541/releases/tag/v1.2.5Release Notes, Third Party Advisory
• https://github.com/open62541/open62541/releases/tag/v1.3.1Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNUV4FDVDBQHCPMOOEVKLMQK5SLKPK2L/
• https://security.snyk.io/vuln/SNYK-UNMANAGED-OPEN62541OPEN62541-2988719Patch, Third Party Advisory
• https://github.com/open62541/open62541/commit/b79db1ac78146fc06b0b8435773d3967de2d659cPatch, Third Party Advisory
• https://github.com/open62541/open62541/pull/5173Patch, Third Party Advisory
• https://github.com/open62541/open62541/releases/tag/v1.2.5Release Notes, Third Party Advisory
• https://github.com/open62541/open62541/releases/tag/v1.3.1Release Notes, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JNUV4FDVDBQHCPMOOEVKLMQK5SLKPK2L/
• https://security.snyk.io/vuln/SNYK-UNMANAGED-OPEN62541OPEN62541-2988719Patch, Third Party Advisory

Published

Aug 23, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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