CVE-2026-88880CWE-601

CVE-2026-88880

High · published September 10, 2026

CVSS v3.1
8.6
EPSS
1%
Percentile
42.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
9.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00504 · 42.2th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-09-10T18:17Z
References (2)
https://github.com/renovatebot/renovate/security/advisories/GHSA-9hmg-9h89-jhmx · [email protected]https://www.vulncheck.com/advisories/renovate-before-44.11.3-credential-exfiltration-via-link-header · [email protected]
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 10 SEP 13:05Z
    Renovate before 44.11.3 Credential Exfiltration via Link Header
    cvelistv5