CVE-2026-44217 | THREATINT

Description

sse-channel is an SSE-implementation which can be used to any node.js http request/response stream. Prior to 4.0.1, implementations that allow user-provided values to be passed to event, retry or id fields are susceptible to event spoofing, where an attacker could inject arbitrary messages into the stream. This vulnerability is fixed in 4.0.1.

PUBLISHED Reserved 2026-05-05 | Published 2026-05-12 | Updated 2026-05-14 | Assigner GitHub_M

MEDIUM: 6.6CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

Problem types

CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')

Product status

< 4.0.1

affected

References

github.com/...hannel/security/advisories/GHSA-84hm-wfh8-c5pg

github.com/rexxars/sse-channel/issues/42

cve.org (CVE-2026-44217)

nvd.nist.gov (CVE-2026-44217)

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