HybridAuth up to 3.12.2 SSL src/HttpClient/Curl.php curlOptions certificate validation

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
3.6	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in HybridAuth up to 3.12.2. Impacted is an unknown function of the file src/HttpClient/Curl.php of the component SSL Handler. This manipulation of the argument curlOptions causes certificate validation. This vulnerability appears as CVE-2026-4587. The attack may be initiated remotely. There is no available exploit. The project was informed of the problem early through an issue report but has not responded yet.

Detailsinfo

A vulnerability classified as problematic was found in HybridAuth up to 3.12.2. Affected by this vulnerability is an unknown functionality of the file src/HttpClient/Curl.php of the component SSL Handler. The manipulation of the argument curlOptions with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect integrity.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-4587. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/23/2026). The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

The project was informed of the problem early through an issue report but has not responded yet. By approaching the search of inurl:src/HttpClient/Curl.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-14425). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

HybridAuth

Version

Website

Product: https://github.com/hybridauth/hybridauth/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.6

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Certificate validation
CWE: CWE-295 / CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/22/2026 Advisory disclosed
03/22/2026 +0 days VulDB entry created
03/23/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 1444
Status: Not defined

CVE: CVE-2026-4587 (🔒)
GCVE (CVE): GCVE-0-2026-4587
GCVE (VulDB): GCVE-100-352423
EUVD: 🔒

Entryinfo

Created: 03/22/2026 10:45
Updated: 03/23/2026 15:48
Changes: 03/22/2026 10:45 (54), 03/23/2026 15:48 (1)
Complete: 🔍
Submitter: jstyles
Cache ID: 216::103

Submitinfo

Accepted

Submit #775463: hybridauth >2.2.0 Improper Certificate Validation (CWE-295) (by jstyles)