Medium [CVE-2026-48815] Unauthorized certificates accepted due to ignored `certificateOIDs` verification option
This medium-severity Red Hat Linux advisory covers CVE-2026-48815 affecting Exploit Intelligence, Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10.
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Summary
sigstore-js provides JavaScript libraries for interacting with Sigstore services.
Prior to 4.1.1, the documented certificateOIDs option in sigstore.verify() is accepted by the public API but discarded before verification, so required certificate extension OIDs are never checked and applications relying on certificateOIDs to restrict which certificates may sign artifacts can accept unauthorized certificates.
This issue is fixed in version 4.1.1. A flaw was found in sigstore.
This allows unauthorized certificates to be accepted, bypassing security policies that rely on specific certificate extension object identifiers (OIDs). As a result, applications that depend on this option for security receive no protection, potentially leading to the acceptance of malicious or untrusted artifacts.
Note: The CVSS has been adjusted with AC:H, due to it's low real-world exposure. Red Hat severity: Moderate — CVSS 5.9 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).
Weakness: CWE-345. Affected Red Hat products: Exploit Intelligence; Red Hat Connectivity Link 1; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux AI (RHEL AI) 3; Self-service automation portal 2.
Red Hat does not currently list a fixing RHSA for this CVE.
- < 4.1.1
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
Mitigation checklist
- Upgrade to sigstore 4.1.1 or later. The majority of products have sigstore-js as a transitive dependency from the npm v10.9.7 package. ``` sh-5.1$ npm ls sigstore npm@10.9.7 /usr/lib/node_modules/npm +-- @npmcli/arborist@8.0.4 | `-- @npmcli/metavuln-calculator@8.0.1 | `-- pacote@20.0.1 | `-- sigstore@3.1.0 deduped +-- libnpmpublish@10.0.2 | `-- sigstore@3.1.0 `-- pacote@19.0.2 `-- sigstore@3.1.0 deduped ```
Official advisory · high-confidence parse· fetched 12 days ago·verify at source
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