CVE-2026-44217: sse-channel is an SSE-implementation which can be used to any node.js http request/response stream. Prior to 4.0.1, impl…
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 by source
- 2026-05-12
- First seen by Reality Radar
- 2026-10-26
- Last verified
- 2026-10-26
What the official notice says
Risk: CVSS 6.6
Is this affecting you?
Add what you own or use and Reality Radar will tell you when official changes match it — with evidence and next steps.
Sources
- NIST National Vulnerability Database Tier A · official published 2026-05-12
Evidence ledger
Every piece of evidence we store is appended to a public hash chain, so later edits are detectable. Anyone can re-verify it.
| Entry | Kind | Observed | Evidence hash | Entry hash |
|---|---|---|---|---|
| #1828 | new | 2026-10-26 | 1228b61837e7…a047db | eb1be96cb01c…ed2712 |
Chain head: #1913 68d492d71c09…880c23