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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-69185

No exploitation reported by the sources we read.

  • Published2026-08-03
  • Fixed in4.2.7 · 3.4.5 · 3.3.6
  • WeaknessCWE-20 · CWE-754

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Socket.IO enables bidirectional and low-latency communication for every platform. Prior to 4.2.7, 3.4.5, and 3.3.6, 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 vulnerability is fixed in 4.2.7, 3.4.5, and 3.3.6.

Timeline

dates in UTC
  1. 2026-08-0320:17CVE publishedNVD

Versions per branch

OSV
socket.io-parser
BranchAffectedFixed in
4.x≥ 4.0.0, < 4.2.74.2.7
3.4≥ 3.4.0, < 3.4.53.4.5
3.3< 3.3.63.3.6

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As GitHub_M, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • socketio socket.io
    Affected
    • = < 3.3.6no fix stated
    • = >= 3.4.0, < 3.4.5no fix stated
    • = >= 4.0.0, < 4.2.7no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-08-03

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • @rootio/socket.io-parserRoot:npmall versions · fixed in 4.2.4-root.io.2
  • gitlab-rails-ce-19.2Chainguardall versions · fixed in 19.2.2-r3
  • gitlab-rails-ce-fips-19.2Chainguardall versions · fixed in 19.2.4-r1
  • gitlab-rails-ce-fips-19.3Chainguardall versions · fixed in 19.3.1-r3
  • jupyter-base-notebookWolfiall versions · fixed in 7.6.3-r2
  • jupyter-base-notebookChainguardall versions · fixed in 7.6.3-r2
  • node-socket.io-parserUbuntu:26.10all versions · no fixed version listed
  • node-socket.io-parserUbuntu:26.04:LTSall versions · no fixed version listed

18 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-69185 Red Hat Product Security4 known affected

    socket.io-parser: Socket.IO: Denial of Service via memory exhaustion from crafted packets

    rhelai3/bootc-cuda-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI) 3 · rhelai3/bootc-gaudi-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI) 3 · rhelai3/bootc-rocm-rhel9 as a component of Red Hat Enterprise Linux AI (RHEL AI) 3 · +1 more

Full record on NVD

Fix

  1. Update socket.io-parser to 4.2.7 · 3.4.5 · 3.3.6
  2. No fix available, says the vendor Red Hat Product Security CVE-2026-69185 · 3 productsAffected
  3. No fix planned, says the vendor Red Hat Product Security CVE-2026-69185 · 1 productWill not fix

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVE recordread 2026-10-24
  • CISA-ADPSSVC decisionnone2026-08-03
  • CNACVSS 3.17.5known since 2026-10-24
  • CNAweakness (CWE)CWE-20, CWE-754known since 2026-10-24
  • FIRST EPSSEPSS score0.6 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryHIGH2026-08-03

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-08-03
Last Modified
2026-10-23
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-2m8v-j782-fhvr

Frequently asked questions

What is CVE-2026-69185?

Socket.IO enables bidirectional and low-latency communication for every platform. Prior to 4.2.7, 3.4.5, and 3.3.6, 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 vulnerability is fixed in 4.2.7, 3.4.5, and 3.3.6.

Is CVE-2026-69185 actively exploited?

Active exploitation of CVE-2026-69185 has not been confirmed. Its EPSS score was 0.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-69185?

CVE-2026-69185 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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