CVE-2026-33151
highpriority · track · 30EPSS 0.007 · 51 %ileDEEURUUSEPSS · scored 2026-10-22
Socket.IO is an open source, real-time, bidirectional, event-based, communication framework. Prior to versions 3.3.5, 3.4.4, and 4.2.6, a specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. This issue has been patched in versions 3.3.5, 3.4.4, and 4.2.6.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedSentio Creatorsick_psirt
Users are strongly recommended to upgrade the Software Deployment Manager extension for Sentio Creator to version 0.14.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.6–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (44)
Products and version ranges known to be affected.
- IBM App Connect Enterprise 12.0.1.0-12.0.12.25all versionscert_bundDEcpe:/a:ibm:app_connect_enterprise:12.0.1.0_-_12.0.12.25
- IBM App Connect Enterprise 12.0.1.0-12.0.12.26all versionscert_bundDEcpe:/a:ibm:app_connect_enterprise:12.0.1.0_-_12.0.12.26
- IBM App Connect Enterprise 13.0.1.0-13.0.7.0all versionscert_bundDEcpe:/a:ibm:app_connect_enterprise:13.0.1.0_-_13.0.7.0
- IBM App Connect Enterprise 13.0.1.0-13.0.7.1all versionscert_bundDEcpe:/a:ibm:app_connect_enterprise:13.0.1.0_-_13.0.7.1
- IBM SPSS Collaboration and Deployment Servicesall versionscert_bundDEcpe:/a:ibm:spss:collaboration_and_deployment_services
- IBM Sterling Connect:Direct Web Servicesall versionscert_bundDEcpe:/a:ibm:sterling_connect%3adirect:web_services
- Red Hat Enterprise Linux 9 Multicluster Engine for Kubernetes 2.8.6all versionscert_bundDEcpe:/o:redhat:enterprise_linux:9_multicluster_engine_for_kubernetes_2.8.6
- Red Hat OpenShift OpenShift Container Platform 4.20.29all versionscert_bundDEcpe:/a:redhat:openshift:openshift_container_platform_4.20.29
advisories (3)
Vendor and ecosystem advisories describing this.
- SCA-2026-0008Vulnerability Affecting SICK Sentio Creator Extension “Software Deployment Manager”2026-07-10csaf · sick_psirtDE
The pre-installed Software Deployment Manager extension in SICK Sentio Creator is affected by CVE-2026-33151. The Software Deployment Manager extension is maintained and updated independently from SICK Sentio Creator and therefore SICK recommends applying the defined remediations for the vulnerability.
- WID-SEC-W-2026-1407IBM App Connect Enterprise Certified Container: Mehrere SchwachstellenDeutsch2026-05-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise Certified Container ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
- GHSA-677m-j7p3-52f9socket.io allows an unbounded number of binary attachments2026-03-18ghsa · osvUS
### Impact A specially crafted Socket.IO packet can make the server wait for a large number of binary attachments and buffer them, which can be exploited to make the server run out of memory. ### Patches | Version range | Used by | Fixed version | |------------------|--------------------------------------------|---------------| | `>=4.0.0 <4.2.6` | `socket.io@4.x` and `socket.io-client@4.x` | `4.2.6` | | `>=3.4.0 <3.4.4` | `socket.io@2.x` | `3.4.4` | | `<3.3.5` | `socket.io-client@2.x` | `3.3.5` | ### Workarounds There is no known workaround except upgrading to a safe version. ### For more information If you have any questions or comments about this advisory: - Open a discussion [here](https://github.com/socketio/socket.io/discussions)
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (14)
External citations — patches, advisories, analysis.
- https://access.redhat.com/security/cve/cve-2026-33151cnnvd
- https://github.com/socketio/socket.io/commit/719f9ebab0772ffb882bd614b387e585c1aa75d4cnnvd
- https://github.com/socketio/socket.io/commit/9d39f1f080510f036782f2177fac701cc041faafcnnvd
- https://github.com/socketio/socket.io/commit/b25738c416c4e32fbff62ee182afa8f6d0dacf78cnnvd
- https://github.com/socketio/socket.io/releasesPatchcnnvd
- https://github.com/socketio/socket.io/security/advisories/GHSA-677m-j7p3-52f9cnnvd
- https://github.com/socketio/socket.io/commit/719f9ebab0772ffb882bd614b387e585c1aa75d4enisa_euvd
- https://github.com/socketio/socket.io/commit/9d39f1f080510f036782f2177fac701cc041faafenisa_euvd
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