CVE-2026-55375
mediumcanto-saas-api is a PHP library for interacting with the Canto SaaS API.
canto-saas-api is a PHP library for interacting with the Canto SaaS API. Prior to version 3.0.0, OAuth2Request::getQueryParams() places app_id, app_secret, refresh_token, and code in the URL query string of token POST requests, allowing access logs, proxy logs, and APM traces to persist the credentials in plaintext. When a token request fails, OAuth2::obtainAccessToken() also passes the credential-bearing Guzzle request URI into AuthorizationFailedException, so application logs and error trackers can record the same secrets. An attacker with access to affected telemetry can obtain Canto credentials and use them to request access tokens for the tenant. This issue is fixed in version 3.0.0.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/jleehr/canto-saas-api/commit/300559fdae5d1bed2dc00a6477f5996833a77339 security-advisories@github.com
- https://github.com/jleehr/canto-saas-api/releases/tag/3.0.0 security-advisories@github.com
- https://github.com/jleehr/canto-saas-api/security/advisories/GHSA-37pm-83g7-r22v security-advisories@github.com