CVE-2026-33182

Saloon is a PHP library that gives users tools to build API integrations and SDKs. Prior to version 4.0.0, when building the request URL, Saloon combined the connector's base URL with the request endpoint. If the endpoint was a valid absolute URL, the code used that URL as-is and ignored the base URL. The request—and any authentication headers, cookies, or tokens attached by the connector—was then sent to the attacker-controlled host. If the endpoint could be influenced by user input or configuration (e.g. redirect_uri, callback URL), this allowed server-side request forgery (SSRF) and/or credential leakage to a third-party host. The fix in version 4.0.0 is to reject absolute URLs in the endpoint: URLHelper::join() throws InvalidArgumentException when the endpoint is a valid absolute URL, unless explicitly allowed, requiring callers to opt-in to the functionality on a per-connector or per-request basis.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://docs.saloon.dev/upgrade/upgrading-from-v3-to-v4	Release Notes
https://github.com/saloonphp/saloon/security/advisories/GHSA-c83f-3xp6-hfcp	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:saloon:saloon:*:*:*:*:*:*:*:*

History

30 Mar 2026, 16:51

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
CPE		cpe:2.3:a:saloon:saloon::::::::
First Time		Saloon Saloon saloon
References	~~() https://docs.saloon.dev/upgrade/upgrading-from-v3-to-v4 -~~	() https://docs.saloon.dev/upgrade/upgrading-from-v3-to-v4 - Release Notes
References	~~() https://github.com/saloonphp/saloon/security/advisories/GHSA-c83f-3xp6-hfcp -~~	() https://github.com/saloonphp/saloon/security/advisories/GHSA-c83f-3xp6-hfcp - Vendor Advisory

Information

Published : 2026-03-26 01:16

Updated : 2026-03-30 16:51

NVD link : CVE-2026-33182

Mitre link : CVE-2026-33182

CVE.ORG link : CVE-2026-33182

JSON object : View

Products Affected

saloon

saloon

CWE

CWE-522

Insufficiently Protected Credentials

CWE-918

Server-Side Request Forgery (SSRF)

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Prior to version 4.0.0, when building the request URL, Saloon combined the connector's base URL with the request endpoint. If the endpoint was a valid absolute URL, the code used that URL as-is and ignored the base URL. The request\u2014and any authentication headers, cookies, or tokens attached by the connector\u2014was then sent to the attacker-controlled host. If the endpoint could be influenced by user input or configuration (e.g. redirect_uri, callback URL), this allowed server-side request forgery (SSRF) and/or credential leakage to a third-party host. The fix in version 4.0.0 is to reject absolute URLs in the endpoint: URLHelper::join() throws InvalidArgumentException when the endpoint is a valid absolute URL, unless explicitly allowed, requiring callers to opt-in to the functionality on a per-connector or per-request basis."}, {"lang": "es", "value": "Saloon es una biblioteca PHP que proporciona a los usuarios herramientas para construir integraciones de API y SDKs. Antes de la versi\u00f3n 4.0.0, al construir la URL de la petici\u00f3n, Saloon combinaba la URL base del conector con el endpoint de la petici\u00f3n. Si el endpoint era una URL absoluta v\u00e1lida, el c\u00f3digo usaba esa URL tal cual e ignoraba la URL base. La petici\u00f3n \u2014y cualquier encabezado de autenticaci\u00f3n, cookies o tokens adjuntos por el conector\u2014 se enviaba entonces al host controlado por el atacante. Si el endpoint pod\u00eda ser influenciado por la entrada del usuario o la configuraci\u00f3n (p. ej., redirect_uri, URL de callback), esto permit\u00eda la falsificaci\u00f3n de petici\u00f3n del lado del servidor (SSRF) y/o la fuga de credenciales a un host de terceros. La soluci\u00f3n en la versi\u00f3n 4.0.0 es rechazar las URLs absolutas en el endpoint: URLHelper::join() lanza InvalidArgumentException cuando el endpoint es una URL absoluta v\u00e1lida, a menos que se permita expl\u00edcitamente, lo que requiere que los llamadores opten por la funcionalidad por conector o por petici\u00f3n."}], "lastModified": "2026-03-30T16:51:45.823", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:saloon:saloon:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2DA20E08-DBB0-4ACD-BED9-550F3ED97E3D", "versionEndExcluding": "4.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}