Auth bypass in Hybridauth
CVE-2026-4587
A vulnerability was found in HybridAuth up to 3.12.2. This issue affects some unknown processing of the file src/HttpClient/Curl.php of the component SSL Handler. The manipulation of the argument curlOptions results in improper certificate validation. The attack can be launched remotely. This attack is characterized by high complexity. The exploitability is assessed as difficult. The project was informed of the problem early through an issue report but has not responded yet.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Hybridauth — versions 3.12.0, 3.12.1, 3.12.2
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, vdb-entry)
- vuldb.com/ (signature, permissions-required)
- vuldb.com/ (third-party-advisory)
- github.com/hybridauth/hybridauth/issues/1444 (issue-tracking)
- github.com/hybridauth/hybridauth/ (product)
Frequently asked questions
- What is CVE-2026-4587?
- CVE-2026-4587 is a low-severity vulnerability in Hybridauth, classified under Improper Authentication. CVSS score: 3.7/10. Published 2026-03-23.
- How severe is CVE-2026-4587?
- Low severity. CVSS v3 base score is 3.7 out of 10.