Rexxars Eventsource-encoder vulnerabilities

🔔 Create alert RSS Version checker

Published CVEs affecting Rexxars Eventsource-encoder: 1 record(s), with affected versions and fixes.
cpe:2.3:a:rexxars:eventsource-encoder

CVE-2026-44214 Medium · 5.3 CWE-93 May 26, 2026

eventsource-encoder: SSE event injection via unsanitized event and id fields

eventsource-encoder encodes events as well-formed EventSource/Server Sent Event (SSE) messages. Prior to 1.0.2, eventsource-encoder does not sanitize the event or id fields of an EventSourceMessage before serializing them. An attacker who controls either field can inject arbitrary Server-Sent Events line terminators (\n, \r, or \r\n) and thereby forge additional SSE fields or entire messages on the stream. This vulnerability is fixed in 1.0.2.