CVE catalog
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
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.63% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-socket.io-parser | sid | 4.2.4+~3.1.2-2 | fixed |
| Debian | node-socket.io-parser | forky | 4.2.4+~3.1.2-2 | fixed |
| Debian | node-socket.io-parser | trixie | 4.2.1+~3.1.0-3 | vulnerable |
| Debian | node-socket.io-parser | bookworm | 4.2.1+~3.1.0-2 | vulnerable |
| Npm | socket.io-parser | Not reported | 3.3.6 | fixed |
| Npm | socket.io-parser | Not reported | 3.4.5 | fixed |
| Npm | socket.io-parser | Not reported | 3.3.6 | fixed |
| Npm | socket.io-parser | Not reported | 4.2.7 | fixed |
| Npm | socket.io-parser | Not reported | 3.4.5 | fixed |
| Npm | socket.io-parser | Not reported | 3.3.6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-socket.io-parser | source | sid | 4.2.4+~3.1.2-1 | not yet assigned | Not reported | [1143598] |
| Debian | node-socket.io-parser | source | forky | 4.2.4+~3.1.2-1 | not yet assigned | Not reported | [1143598] |
| Debian | node-socket.io-parser | source | trixie | (unfixed) | not yet assigned | Not reported | [1143598] |
| Debian | node-socket.io-parser | source | bookworm | (unfixed) | not yet assigned | Not reported | [1143598] |
| Npm | socket.io-parser | npm | Not reported | 3.3.6 | Not reported | GHSA-2M8V-J782-FHVR | Not reported |
| Npm | socket.io-parser | npm | Not reported | 3.4.5 | Not reported | Not reported | Not reported |
| Npm | socket.io-parser | npm | Not reported | 3.3.6 | Not reported | Not reported | Not reported |
| Npm | socket.io-parser | npm | Not reported | 4.2.7 | Not reported | Not reported | Not reported |
| Npm | socket.io-parser | npm | Not reported | 3.4.5 | Not reported | Not reported | Not reported |
| Npm | socket.io-parser | npm | Not reported | 3.3.6 | Not reported | Not reported | Not reported |
Notes
[trixie] node-socket.io-parser: Minor issue [bookworm] node-socket.io-parser: minor issue; DoS
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [node-socket.io-parser]Affected
Details (2)
4.2.1+~3.1.0-2· all · bookwormAffected
nvd · node-socket.io-parser · debian · bookworm; nvd · node-socket.io-parser · debian · 12
4.2.1+~3.1.0-2· all · bookwormAffected
nvd · node-socket.io-parser · debian · bookworm; nvd · node-socket.io-parser · debian · 12
[Debian 13 (Trixie)]
- [node-socket.io-parser]Affected
Details (2)
4.2.1+~3.1.0-3· all · trixieAffected
nvd · node-socket.io-parser · debian · 13
4.2.1+~3.1.0-3· all · trixieAffected
nvd · node-socket.io-parser · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/]
- [https://github.com/socketio/socket.io/commit/7c6ef571a00656718e9e05e3b948fd1758b2a7b4]
- [https://github.com/socketio/socket.io/commit/9c6323e5cde41bd75df3379b5fc9293664a5f240]
- [https://github.com/socketio/socket.io/commit/ced94ffa3ac020a8f3c14eb98a3bf34acb14d291]
- [https://github.com/socketio/socket.io/security/advisories/GHSA-2m8v-j782-fhvr]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-69185]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-69185]
- [https://osv.dev/vulnerability/GHSA-2m8v-j782-fhvr]
- [https://security-tracker.debian.org/tracker/CVE-2026-69185]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-69185.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]