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CVE-2026-88880— Renovate before 44.11.3 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 在 44.11.3 之前版本在跟踪 GitLab 服务器分页时，未能验证 头部中的目标地址，这使得恶意服务器可以将携带凭证的请求重定向到攻击者控制的资源。控制着某个已受损 GitLab 服务器的攻击者可以通过指定指向其自身基础设施的 头部，从而窃取认证凭证。

CVSS 8.6 · High
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I. Basic Information for CVE-2026-88880

Vulnerability Information
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Vulnerability Title
Renovate before 44.11.3 Credential Exfiltration via Link Header
Source: CVE Program / CVE List V5
Vulnerability Description
Renovate before 44.11.3 fails to validate Link header destinations when following GitLab server pagination, allowing malicious servers to redirect credential-bearing requests. Attackers controlling a compromised GitLab server can specify a Link header pointing to attacker-controlled infrastructure to exfiltrate authentication credentials.
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 ~ 44.11.3 -
renovatebot renovate 0 ~ 44.11.3 -
renovatebot renovate 0 ~ 44.11.3 -
renovatebot renovate 0 ~ 44.11.3 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 15.4.0 -
renovatebot renovate 0 ~ 10.4.0 -
renovatebot renovate 0 ~ 10.4.0 -

II. Public POCs for CVE-2026-88880

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III. Intelligence Information for CVE-2026-88880

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Vendor Advisories for CVE-2026-88880 (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-2026-88881 8.6 HIGH Renovate before 44.11.3 Credential Exfiltration via Link Header
CVE-2026-88887 8.6 HIGH Renovate before 44.11.2 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
Same vendor: renovatebot
Same weakness: CWE-601

V. Comments for CVE-2026-88880

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