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CVE-2026-49349— regclient may leak authentication credentials to external blob stores

Quick assessment

Affected
regclient regclient
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

regclient是regclient组织开源的一个针对符合 OCI 的注册表和随 OCI 镜像布局提供的内容的客户端接口。 regclient 0.11.5之前版本存在信任管理问题漏洞，该漏洞源于注册表凭据可能无意中泄露到外部服务器。

CVSS 6.8 · Medium EPSS 0.31% · P23

Possible ATT&CK Techniques 1 AI

T1560.001 · Archive via Utility

Affected Version Matrix 1

VendorProduct Version RangeStatus
regclient regclient < 0.11.5 affected
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I. Basic Information for CVE-2026-49349

Vulnerability Information
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Vulnerability Title
regclient may leak authentication credentials to external blob stores
Source: CVE Program / CVE List V5
Vulnerability Description
regclient is a Docker and OCI Registry Client in Go. Prior to version 0.11.5, credentials for a registry may be inadvertently leaked to external servers. A prerequisite for this attack is a malicious registry server, a malicious blob store, or a registry that does not restrict the external URLs for foreign blobs. Version 0.11.5 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的凭证保护机制
Source: CVE Program / CVE List V5
Vulnerability Title
regclient 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
regclient是regclient组织开源的一个针对符合 OCI 的注册表和随 OCI 镜像布局提供的内容的客户端接口。 regclient 0.11.5之前版本存在信任管理问题漏洞，该漏洞源于注册表凭据可能无意中泄露到外部服务器。
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
regclient regclient < 0.11.5 -

II. Public POCs for CVE-2026-49349

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III. Intelligence Information for CVE-2026-49349

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Vendor Advisories for CVE-2026-49349 (1)

IV. Related Vulnerabilities

Same product: regclient
Same vendor: regclient
Same weakness: CWE-522