Renovate before 44.11.3 Credential Exfiltration via Link Header (CVE-2026-88880) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-88880

Renovate before 44.11.3 Credential Exfiltration via Link Header

Answer in brief

CVE-2026-88880 records a Unknown severity vulnerability in Renovate before 44.11.3 Credential Exfiltration via Link Header. The current sources do not mark it as known exploited. The current feed maps renovatebot/renovate (generic), renovatebot/renovate (generic), renovatebot/renovate (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 3 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps renovatebot/renovate (generic), renovatebot/renovate (generic), renovatebot/renovate (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
renovatebot/renovategeneric	>=0 <44.11.3	44.11.3
renovatebot/renovategeneric	>=0 <15.4.0	15.4.0
renovatebot/renovategeneric	>=0 <10.4.0	10.4.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for renovatebot/renovate, renovatebot/renovate, renovatebot/renovate.
Review the reported fix. Update renovatebot/renovate to 44.11.3; renovatebot/renovate to 15.4.0; renovatebot/renovate to 10.4.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.