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CVE-2026-48815— sigstore-js: `certificateOIDs` verification constraints are silently dropped and never enforced

Quick assessment

Affected
sigstore sigstore-js
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

sigstore sigstore-js是美国sigstore组织的一个JavaScript签名服务库。 sigstore sigstore-js 4.1.1之前版本存在加密问题漏洞，该漏洞源于证书扩展OID校验被忽略，可能导致依赖特定证书签名的应用程序接受未经授权的证书。

CVSS 7.5 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1553.005 · Mark-of-the-Web Bypass

Affected Version Matrix 1

VendorProduct Version RangeStatus
sigstore sigstore-js < 4.1.1 affected
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I. Basic Information for CVE-2026-48815

Vulnerability Information
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Vulnerability Title
sigstore-js: `certificateOIDs` verification constraints are silently dropped and never enforced
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
密码学签名的验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
sigstore sigstore-js 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sigstore sigstore-js是美国sigstore组织的一个JavaScript签名服务库。 sigstore sigstore-js 4.1.1之前版本存在加密问题漏洞，该漏洞源于证书扩展OID校验被忽略，可能导致依赖特定证书签名的应用程序接受未经授权的证书。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sigstore sigstore-js < 4.1.1 -

II. Public POCs for CVE-2026-48815

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7209 chars
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III. Intelligence Information for CVE-2026-48815

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Patches & Fixes for CVE-2026-48815 (3)

Vendor Advisories for CVE-2026-48815 (1)

Same Patch Batch · sigstore · 2026-07-14 · 4 CVEs total

CVE-2026-59891 9.6 CRITICAL Credential confusion in  @sigstore/oci  can leak registry credentials to an attacker-contr
CVE-2026-48816 6.5 MEDIUM sigstore-js: Insufficient Verification of Data Authenticity
CVE-2026-48758 5.4 MEDIUM sigstore-js: DSSE payloadType type-binding failure

IV. Related Vulnerabilities

Same product: sigstore-js
Same vendor: sigstore
Same weakness: CWE-347

V. Comments for CVE-2026-48815

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