CVE-2026-4587
CWE-287Published: March 23, 2026· Updated: Mar 23, 2026
Official Description
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.
Technical Analysis
CVE-2026-4587 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
All References (5)
Quick Facts
Related CVEs (CWE-287)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-4587 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts