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SCA: security update for eventsource-encoder (GHSA-m9g3-3g99-mhpx)

medium Tenable Cloud Security Plugin ID 441588

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-44214)

Solution

Update the eventsource-encoder library and its related packages to version 1.0.2 or later.

See Also

https://github.com/advisories/GHSA-m9g3-3g99-mhpx

Plugin Details

Severity: Medium

ID: 441588

Version: Revision 1.7

Type: Local

Family: SCA Checks

Published: 5/9/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS Score Source: CVE-2026-44214

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/8/2026

Vulnerability Publication Date: 5/8/2026

Reference Information

CVE: CVE-2026-44214