CVE-2026-4587
Improper Certificate Validation in HybridAuth SSL Handler (Remote
Publication date: 2026-03-23
Last updated on: 2026-03-23
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| hybridauth | hybridauth | to 3.12.2 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-295 | The product does not validate, or incorrectly validates, a certificate. |
| CWE-287 | When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability exists in HybridAuth versions up to 3.12.2, specifically in the SSL Handler component within the file src/HttpClient/Curl.php. It involves improper certificate validation caused by manipulation of the curlOptions argument. This flaw can be exploited remotely but requires high complexity and is considered difficult to exploit.
How can this vulnerability impact me? :
The vulnerability can lead to improper certificate validation, which may allow an attacker to interfere with the integrity of SSL/TLS connections made by HybridAuth. This could result in unauthorized actions or data manipulation (integrity impact) without compromising confidentiality or availability. However, the exploit requires high complexity and is difficult to execute.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
As of the latest information, the HybridAuth project has not responded or published a fix for this vulnerability.
Given the vulnerability involves improper certificate validation in the SSL Handler component (src/HttpClient/Curl.php), immediate mitigation steps could include:
- Avoid using affected versions of HybridAuth (up to 3.12.2) in sensitive environments.
- Monitor for updates or patches from the HybridAuth project.
- Implement additional network-level security controls such as strict TLS inspection or firewall rules to limit exposure.
- Consider disabling or restricting features that rely on the vulnerable SSL Handler until a fix is available.