Medium severity6.6GHSA Advisory· Published May 12, 2026· Updated May 13, 2026

CVE-2026-44217

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.

Affected products

Rexxars/Sse ChannelGHSA
Range: <= 4.0.0

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-84hm-wfh8-c5pgghsaADVISORY
github.com/rexxars/sse-channel/issues/42nvd
github.com/rexxars/sse-channel/security/advisories/GHSA-84hm-wfh8-c5pgnvd
nvd.nist.gov/vuln/detail/CVE-2026-44217ghsa

News mentions

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cvss	0.260
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000