CVE-2026-33467

FAUCET Score

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.

First published: Apr 28, 2026Last modified: Apr 29, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 1.38.0CPE matchmatch criteria	cpe:2.3:a:elastic:elastic_package_registry::::::::
		>= 0.1.0, <= 1.37.0CPE match	cpe:2.3:a:elastic:elastic_package_registry::::::::

CVSS Data

CVSS version used by this source: 3.1

5.9MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

Exploitability Score

2.2

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.12%

Probability of exploitation in next 30 days

EPSS Percentile

2.5%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0012 is in the 0th percentile among its peer group of 19,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

gopatch availablevia ghsa

Product: github.com/elastic/package-registryFixed in: 1.38.0

Vendor Advisories (1)

goGHSA-r727-5pf6-47r2medium

Elastic Package Registry has Improper Verification of Cryptographic Signature

Apr 29, 2026

References

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

Vendor Advisory