GHSA-677m-j7p3-52f9

Suggest an improvement
Source
https://github.com/advisories/GHSA-677m-j7p3-52f9
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-677m-j7p3-52f9/GHSA-677m-j7p3-52f9.json
JSON Data
https://api.test.osv.dev/v1/vulns/GHSA-677m-j7p3-52f9
Aliases
Downstream
Published
2026-03-18T17:26:14Z
Modified
2026-07-17T21:12:53Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
socket.io allows an unbounded number of binary attachments
Details

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
Database specific 
{
    "cwe_ids":  [
        "CWE-754"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-03-18T17:26:14Z",
    "nvd_published_at":  "2026-03-20T21:17:15Z",
    "severity":  "HIGH"
}
References

Affected packages

npm / socket.io-parser

Package

Name
socket.io-parser
View open source insights on deps.dev
Purl
pkg:npm/socket.io-parser

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.3.5

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-677m-j7p3-52f9/GHSA-677m-j7p3-52f9.json"

npm / socket.io-parser

Package

Name
socket.io-parser
View open source insights on deps.dev
Purl
pkg:npm/socket.io-parser

Affected ranges

Type
SEMVER
Events
Introduced
3.4.0
Fixed
3.4.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-677m-j7p3-52f9/GHSA-677m-j7p3-52f9.json"

npm / socket.io-parser

Package

Name
socket.io-parser
View open source insights on deps.dev
Purl
pkg:npm/socket.io-parser

Affected ranges

Type
SEMVER
Events
Introduced
4.0.0
Fixed
4.2.6

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-677m-j7p3-52f9/GHSA-677m-j7p3-52f9.json"