CVE-2026-44217Disclosure

LOWCVSS 6.6 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-93

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • Peaked 1d ago at 1 mentions (2026-05-06); latest day: 1
  • 2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-05-06: 1Mentions · 2026-05-12: 1Technical Details · 2026-05-06: 1Technical Details · 2026-05-12: 105-0605-12
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
Classification over time
DateTotalLabels
2026-05-061
Disclosure1
2026-05-121
General1
Full discourse2 posts
  • CVE@CVEnew
    General

    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, implementations that allow user-provided values to… https://www.cve.org/CVERecord?id=CVE-2026-44217

    Post summary

    The post references CVE-2026-44217, noting that the sse-channel implementation in Node.js accepts user‑provided values before version 4.0.1, but provides no detail on exploitation, PoC, or mitigation.

    0000096
    57.5K followersView on X
  • DailyCVE@dailycve
    Disclosure

    🟠 sse-channel, Server-Sent Events Injection via Sanitization Bypass, #CVE-2026-44217 (Moderate) https://dailycve.com/sse-channel-server-sent-events-injection-via-sanitization-bypass-cve-2026-44217-moderate/

    Post summary

    The text announces a moderate‑severity CVE involving Server‑Sent Events injection via sanitization bypass, without providing PoC, exploit code, or evidence of active exploitation.

    0000033
    196 followersView on X

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