CVE-2026-43968 CR Injection in SSE Encoder Enables Event Splitting via cow_sse:event/1

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cowsse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal prefixlines/2 function...

CVE-2026-43968

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cowsse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal prefixlines/2 function...

CVE-2026-43968

CVE-2026-43968 involves an CRLF injection in ninenines/cowlib, triggered by the SSE encoding path cow_sse:event/1. The root cause is improper neutralization of CRLF sequences: while id and event fields guard against \n, bare \r is not sanitized, and prefix_lines/2 used for data and comment fields...

EEF-CVE-2026-43968 CR Injection in SSE Encoder Enables Event Splitting via cow_sse:event/1

Summary Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cow\sse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal prefix\lines/2...

CVE-2026-43968

Improper Neutralization of CRLF Sequences 'CRLF Injection' vulnerability in ninenines cowlib allows SSE event splitting and injection via unvalidated field values. cowsse:event/1 in cowlib guards the id and event fields against \n but not against bare \r, and the internal prefixlines/2 function...

PT-2026-39726

Name of the Vulnerable Software and Affected Versions cowlib versions 2.6.0 and later Description Improper Neutralization of CRLF Sequences CRLF Injection allows SSE event splitting and injection through unvalidated field values. The cow sse:event/1 function guards the id and event fields against...

Permissive Cross-domain Policy with Untrusted Domains

Overview @yoda.digital/gitlab-mcp-server is a GitLab MCP Server - A Model Context Protocol server for GitLab integration Affected versions of this package are vulnerable to Permissive Cross-domain Policy with Untrusted Domains via the SSE HTTP transport when USESSE=true is set, which lacks...

GHSA-M9G3-3G99-MHPX eventsource-encoder vulnerable to SSE event injection via unsanitized `event` and `id` fields

Summary 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...

NPM: eventsource-encoder vulnerable to SSE event injection via unsanitized `event` and `id` fields

NPM: eventsource-encoder vulnerable to SSE event injection via unsanitized event and id fields vulnerability discovered by ? in WordPress Npm eventsource-encoder versions = 1.0.1...

eventsource-encoder vulnerable to SSE event injection via unsanitized `event` and `id` fields

Summary 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...

PT-2026-39241

Name of the Vulnerable Software and Affected Versions eventsource-encoder versions prior to 1.0.2 Description The software fails to sanitize the event and id fields of an EventSourceMessage before serialization in the encodeMessage function. An attacker who controls these fields can inject...

GHSA-84HM-WFH8-C5PG sse-channel: SSE Injection via unsanitized event fields

Impact Implementations that allows user-provided values to be passed to event, retry or id fields would be susceptible to event spoofing, where an attacker could inject arbitrary messages into the stream. - Event Spoofing: Attacker can inject arbitrary SSE events into the stream - Client-side...

PT-2026-37313

Name of the Vulnerable Software and Affected Versions sse-channel versions prior to 4.0.1 Description Implementations that allow user-provided values to be passed to the event, retry, or id fields are susceptible to event spoofing. This allows an attacker to inject arbitrary Server-Sent Events SS...

Security Bulletin: Multiple Vulnerabilities in IBM CloudPak for AIOps

Summary Multiple vulnerabilities were addressed in IBM Cloud Pak for AIOps version 4.13.1 Vulnerability Details CVEID:CVE-2026-22737 DESCRIPTION: Use of Java scripting engine enabled e.g. JRuby, Jython template views in Spring MVC and Spring WebFlux applications can result in disclosure of conten...

PT-2026-35374

Insertion of Sensitive Information Into Sent Data vulnerability in WPDeveloper Templately allows Retrieve Embedded Sensitive Data.This issue affects Templately: from n/a through 3.6.1...

Security Bulletin: Due to use of spring-web-6.2.16.jar, IBM Sterling Connect:Direct Web Services is affected by stream corruption issue when using Server-Sent Events (SSE).

Summary spring-web-6.2.16.jar is used by IBM Sterling Connect:Direct Web Services CVE-2026-22735. Vulnerability Details CVEID:CVE-2026-22735 DESCRIPTION: Spring MVC and WebFlux applications are vulnerable to stream corruption when using Server-Sent Events SSE. This issue affects Spring Foundation...

be.appify.prefab:prefab-security (>=0.2.0 <=0.7.5), ch.admin.bit.jeap:jeap-audit-command-builder (>=7.0.0-alpha-springboot4 <=7.1.0-alpha-springboot4) +1099 more potentially affected by CVE-2026-22746 via org.springframework.security:spring-security-core (>=7.0.0-M1 <=7.0.4)

org.springframework.security:spring-security-core MAVEN version =7.0.0-M1, =0.2.0, =7.0.0-alpha-springboot4, =2.0.0-alpha-springboot4, =5.0.0-alpha-springboot4, =9.0.0-alpha-springboot4, =22.0.0-alpha-springboot4, =22.0.0-alpha-springboot4, =22.0.0-alpha-springboot4, =22.0.0-alpha-springboot4,...

CVE-2026-40592

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route GET /conversation/undo-reply/threadid checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a...

CVE-2026-40592 FreeScout's cross-user undo reply allows mailbox peers to recall another agent's outbound reply

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route GET /conversation/undo-reply/threadid checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a...

CVE-2026-40592 FreeScout's cross-user undo reply allows mailbox peers to recall another agent's outbound reply

FreeScout is a free self-hosted help desk and shared mailbox. Prior to version 1.8.214, the undo-send route GET /conversation/undo-reply/threadid checks only whether the current user can view the parent conversation. It does not verify that the current user created the reply being undone. In a...