CVE-2026-33467

MEDIUM

Improper Verification of Cryptographic Signature in Elastic Package Registry Leading to Package Integrity Bypass

Title source: cna

Description

Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.

References (1)

https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081

Scores

CVSS v3 5.9

EPSS 0.0002

EPSS Percentile 5.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-347

Status published

Products (1)

Elastic/Elastic Package Registry 0.1.0 - 1.37.0

Published Apr 28, 2026

Tracked Since Apr 29, 2026