Description
In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.
Published: 2026-09-10
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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History

Thu, 10 Sep 2026 22:45:00 +0000

Type Values Removed Values Added
Title Incomplete RSA Signature Validation in OCaml jose Before 0.11.0

Thu, 10 Sep 2026 22:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 10 Sep 2026 20:00:00 +0000

Type Values Removed Values Added
Description In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-09-10T21:00:25.030Z

Reserved: 2026-09-10T19:52:46.560Z

Link: CVE-2026-89086

cve-icon Vulnrichment

Updated: 2026-09-10T20:55:23.339Z

cve-icon NVD

Status : Received

Published: 2026-09-10T20:17:32.113

Modified: 2026-09-10T21:17:52.570

Link: CVE-2026-89086

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-10T22:30:08Z

Weaknesses