Vulnerability-Lookup

CVE-2026-33467 (GCVE-0-2026-33467)

Vulnerability from cvelistv5 – Published: 2026-04-28 21:15 – Updated: 2026-04-29 15:10

Title

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

Summary

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.

Severity

5.9 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-29 14:54 UTC

CWE

CWE-347 - Improper Verification of Cryptographic Signature

Assigner

elastic mitre root

References

1 reference

URL	Tags
https://discuss.elastic.co/t/elastic-package-regi…

Impacted products

1 product

Vendor	Product	Version	CPE status
Elastic	Elastic Package Registry	Affected: 0.1.0 , ≤ 1.37.0 (semver)	guessed

Show details on NVD website

JSON

To clipboard

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CERTFR-2026-AVI-0511

Vulnerability from certfr_avis - Published: 2026-04-29 - Updated: 2026-04-29

Une vulnérabilité a été découverte dans Elastic Package Registry. Elle permet à un attaquant de provoquer une atteinte à la confidentialité des données, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	Elastic	Package Registry	Elastic Package Registry versions antérieures à 1.38.0

References

Title

Publication Time

FKIE_CVE-2026-33467

Vulnerability from fkie_nvd - Published: 2026-04-28 22:16 - Updated: 2026-07-24 23:10

Severity

5.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Summary

References

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

Impacted products

	Vendor	Product	Version
	elastic	elastic_package_registry	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Elastic Package Registry",
          "vendor": "Elastic",
          "versions": [
            {
              "lessThanOrEqual": "1.37.0",
              "status": "affected",
              "version": "0.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@elastic.co"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:elastic:elastic_package_registry:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DCA1EBA8-B5AF-4AC8-A740-8E13E702B0ED",
              "versionEndExcluding": "1.38.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
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    {
      "lang": "en",
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    },
    {
      "lang": "es",
      "value": "Verificaci\u00f3n Incorrecta de Firma Criptogr\u00e1fica (CWE-347) en Elastic Package Registry podr\u00eda permitir a un atacante posicionado para interceptar el tr\u00e1fico de red, o para influir de otro modo en el contenido servido a un registro autoalojado, sustituir un paquete manipulado sin que la verificaci\u00f3n de integridad falle cerr\u00e1ndose."
    }
  ],
  "id": "CVE-2026-33467",
  "lastModified": "2026-07-24T23:10:00.563",
  "metrics": {
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GHSA-R727-5PF6-47R2

Vulnerability from github – Published: 2026-04-29 00:30 – Updated: 2026-05-06 21:56

Summary

Elastic Package Registry has Improper Verification of Cryptographic Signature

Details

Severity

5.9 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/elastic/package-registry"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.38.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-33467"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-347"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-06T21:56:35Z",
    "nvd_published_at": "2026-04-28T22:16:48Z",
    "severity": "MODERATE"
  },
  "details": "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.",
  "id": "GHSA-r727-5pf6-47r2",
  "modified": "2026-05-06T21:56:35Z",
  "published": "2026-04-29T00:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33467"
    },
    {
      "type": "WEB",
      "url": "https://discuss.elastic.co/t/elastic-package-registry-1-38-0-security-update-esa-2026-27/386081"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/elastic/package-registry"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Elastic Package Registry has Improper Verification of Cryptographic Signature "
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2026-33467 (GCVE-0-2026-33467)

CERTFR-2026-AVI-0511

Solutions

FKIE_CVE-2026-33467

GHSA-R727-5PF6-47R2

Tags

Sightings

Nomenclature

Related by attack behaviour