CVE-2026-88880

Renovate before 44.11.3 Credential Exfiltration via Link Header

HIGH
8.6
CVSS Score
Published: September 10, 2026 at 01:05 PM UTC
Updated: September 29, 2026 at 11:17 PM UTC
3 products affected across 2 vendorsRenovateRenovate EeRenovate Ce

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Severity
HIGH8.6
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 15.4.0
Vendor states this is fixed in 15.4.0 (unaffected)
v < 10.4.0v < 15.4.0
Vendor states this is fixed in 10.4.0 (unaffected)
Vendor states this is fixed in 15.4.0 (unaffected)
v < 44.11.3
Vendor states this is fixed in 44.11.3 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.6HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-601

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