VulnSocial

CVE-2026-33151Disclosure(socket / socket.io-parser)

LOWCVSS 7.5 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch socket socket.io-parser systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.5/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-20CWE-754

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • socket.io-parser

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • 2 total mentions across 1 day

Affected systems

Vendors
socket
Products
socket.io-parser

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-03-21: 2Patch / Workaround · 2026-03-21: 1Technical Details · 2026-03-21: 203-21
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets3 URLs
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-33151 http://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 http://Socket.IO … https://www.cve.org/CVERecord?id=CVE-2026-33151 ----- Tr… http://infoflow.cloud`

    Post summary

    The post announces CVE-2026-33151 affecting Socket.IO versions prior to 3.3.5, 3.4.4, and 4.2.6, noting a specially crafted request can exploit it, but offers no evidence of exploitation, patch, or PoC.

    0000021
    61 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-33151 http://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 http://Socket.IO … https://www.cve.org/CVERecord?id=CVE-2026-33151

    Post summary

    Socket.IO versions before 3.3.5, 3.4.4, and 4.2.6 contain a vulnerability; updating to a newer release mitigates the risk.

    00000173
    56.8K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appsocketsocket.io-parser-node.js-

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