CVE-2026-88887— Renovate before 44.11.2 Credential Exfiltration via Link Header
Quick assessment
Affected
renovatebot renovate
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.
Renovate 是一个依赖项更新自动化工具。在获取容器镜像的标签/摘要列表时，Renovate 会遵循远程注册表在 HTTP Link 响应头中提供的分页链接，并在发起后续请求时附加该注册表的凭据，但并不会验证该分页 URL 是否与原始注册表具有相同的源（origin）。因此，恶意或已被攻陷的容器注册表可以通过 Link 响应头指定一个由攻击者控制的主机，从而获取到 Renovate 用于访问该注册表的凭据。利用此漏洞的前提是：目标系统已配置了容器（Docker）依赖项，并且已经与恶意或已被攻陷的注册表进行交互。
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I. Basic Information for CVE-2026-88887
Vulnerability Information
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Vulnerability Title
Renovate before 44.11.2 Credential Exfiltration via Link Header
Source: CVE Program / CVE List V5
Vulnerability Description
Renovate is a dependency update automation tool. When listing tags/digests for a container image, Renovate follows pagination links supplied by the remote registry in the HTTP Link header and attaches the registry credentials to the follow-up request without verifying that the pagination URL has the same origin as the original registry. A malicious or compromised container registry can therefore specify a Link header pointing to an attacker-controlled host and receive the credentials Renovate uses for that registry. Exploitation requires that the target has container (Docker) dependencies and is already interacting with the malicious or compromised registry. This is fixed in Renovate 44.11.2 (npm and renovate/renovate images), Mend Renovate CE/EE 15.4.0 and the mend-renovate-enterprise-edition Helm chart 10.4.0; the same-origin check can be disabled with RENOVATE_X_DOCKER_PAGINATION_ALLOW_CROSS_ORIGIN.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| renovatebot | renovate | 0 ~ 44.11.2 | - |
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| renovatebot | renovate | 0 ~ 44.11.2 | - |
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| renovatebot | renovate | 0 ~ 44.11.2 | - |
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| renovatebot | renovate | 0 ~ 44.11.2 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 15.4.0 | - |
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| renovatebot | renovate | 0 ~ 10.4.0 | - |
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| renovatebot | renovate | 0 ~ 10.4.0 | - |
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II. Public POCs for CVE-2026-88887
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-88887 (2)
Same Patch Batch · renovatebot · 2026-09-10 · 10 CVEs total
| CVE-2026-88882 | 8.6 HIGH | Renovate before 44.11.2 Credential Exfiltration via Link Header |
| CVE-2026-88880 | 8.6 HIGH | Renovate before 44.11.3 Credential Exfiltration via Link Header |
| CVE-2026-88881 | 8.6 HIGH | Renovate before 44.11.3 Credential Exfiltration via Link Header |
| CVE-2026-88886 | 7.8 HIGH | Renovate before 44.14.7 Command Injection via gradle-wrapper |
| CVE-2026-88889 | 7.8 HIGH | Renovate before 44.14.7 Command Injection via distributionType |
| CVE-2026-88883 | 7.7 HIGH | Renovate before 44.14.4 TLS Private Key Log Sanitisation |
| CVE-2026-88885 | 7.0 HIGH | Renovate before 44.14.7 Command Injection via depName |
| CVE-2026-88888 | 7.0 HIGH | Renovate before 44.14.7 Command Injection via Mix organization |
| CVE-2026-88884 | 5.8 MEDIUM | Renovate before 44.3.1 Authentication Bypass via Digest Updates |
IV. Related Vulnerabilities
Same product: renovate
-
CVE-2026-88889
Renovate before 44.14.7 Command Injection via distributionTy -
CVE-2026-88888
Renovate before 44.14.7 Command Injection via Mix organizati -
CVE-2026-88886
Renovate before 44.14.7 Command Injection via gradle-wrapper -
CVE-2026-88884
Renovate before 44.3.1 Authentication Bypass via Digest Upda -
CVE-2026-88885
Renovate before 44.14.7 Command Injection via depName
Same vendor: renovatebot
-
CVE-2026-88889
Renovate before 44.14.7 Command Injection via distributionTy -
CVE-2026-88888
Renovate before 44.14.7 Command Injection via Mix organizati -
CVE-2026-88886
Renovate before 44.14.7 Command Injection via gradle-wrapper -
CVE-2026-88884
Renovate before 44.3.1 Authentication Bypass via Digest Upda -
CVE-2026-88885
Renovate before 44.14.7 Command Injection via depName
Same weakness: CWE-601
-
CVE-2026-88882
Renovate before 44.11.2 Credential Exfiltration via Link Hea -
CVE-2026-88881
Renovate before 44.11.3 Credential Exfiltration via Link Hea -
CVE-2026-88880
Renovate before 44.11.3 Credential Exfiltration via Link Hea -
CVE-2026-8323
Open Redirect in Armiya Information Technologies' Access Con -
CVE-2026-86756
Snipe-IT 8.5.0 through 8.6.3 Open Redirect via SAML RelaySta
V. Comments for CVE-2026-88887
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