CVE-2026-4587 HybridAuth SSL Curl.php certificate validation
HybridAuth library fails to properly validate SSL certificates, allowing attackers to bypass security checks and potentially intercept authentication data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4587?
CVE-2026-4587 is a medium-severity vulnerability in HybridAuth, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2026-4587?
2 open source packages ship an affected version, including hybridauth/hybridauth.
| Package | Affected | Fixed in |
|---|---|---|
hybridauth/hybridauth Packagist | All versions to 3.12.2 | None |
hybridauth/hybridauth Packagist | All versions to 3.12.2 | None |
How do I fix CVE-2026-4587?
No fix has been published for CVE-2026-4587 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4587 being exploited?
There is no known exploitation of CVE-2026-4587 in the wild and no public exploit code.
Sources
Also known as GHSA-r3hf-q3mf-7h6w.