CVE-2026-57177: Social auth core Social-auth-core Has Login CSRF Vulnerability
MODERATECVE-2026-57177 is a MODERATE (CVSS 4.3) social-auth-core has login csrf vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Social auth core libraries in the PyPI ecosystem. The issue involves social-auth-core has login csrf via missing state parameter in loginradius backend. Remediation is available by upgrading affected packages to version 5.0.0.
CVE-2026-57177 at a Glance
Security Impact
CVSS: 4.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
How to Fix CVE-2026-57177
To remediate this vulnerability, upgrade all affected Social auth core dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
pip install social-auth-core>=5.0.0Run the following command in your project directory to verify that all resolved dependencies use the patched release:
pip show social-auth-coreHow to Check if You Are Affected
To determine whether your Python environment is affected by CVE-2026-57177, inspect your installed packages using pip:
pip show social-auth-coreAnalyze the terminal output to locate any version of Social auth core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.0), your application is affected.
Note: The pip show social-auth-core command checks currently installed packages in your active Python environment.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Social auth core, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-57177 Affected Social auth core Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
social-auth-core
|
PyPI |
< 5.0.0
|
5.0.0
|
References
Frequently Asked Questions
What is CVE-2026-57177?
Which Social auth core versions are affected?
What version fixes CVE-2026-57177?
Is social-auth-core affected?
What is the CVSS score of CVE-2026-57177?
What CWE is associated with CVE-2026-57177?
How can I check PyPI dependencies for CVE-2026-57177?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-x7qq-23vw-7pfg",
"modified" : "2026-09-24T19:56:39Z",
"published" : "2026-09-24T19:56:39Z",
"aliases" : [ "CVE-2026-57177" ],
"summary" : "social-auth-core has Login CSRF via Missing State Parameter in LoginRadius Backend",
"details" : "### Impact\n\nThe LoginRadius backend did not validate OAuth state during the authentication flow.\n\nApplications using this backend were vulnerable to login CSRF. An attacker could cause a victim's browser session to complete authentication using an attacker-controlled LoginRadius token, making the victim authenticated as the attacker's LoginRadius identity.\n\nThe issue affects only applications using the LoginRadius backend.\n\n### Patches\n\nThe issue has been fixed by enabling callback state validation for the LoginRadius backend.\n\nUsers should upgrade to a patched version.\n\nFix:\n\n* https://github.com/python-social-auth/social-core/pull/1808\n\n### Workarounds\n\nApplications that cannot upgrade immediately should disable the LoginRadius backend by removing it from `SOCIAL_AUTH_AUTHENTICATION_BACKENDS`.\n\nThere is no complete workaround while continuing to use the vulnerable backend.\n\n### Credits\n\nReported through GitHub private vulnerability reporting by Liyi Zhou, Ziyue Wang, Strick, Maurice, and Chenchen Yu from the University of Sydney security research team.\n\nReporter references:\n\n* https://lzhou1110.github.io/\n* https://zyy0530.github.io/\n* https://str1ckl4nd.github.io/\n* https://maurice.busystar.org/\n* https://7thparkk.github.io/",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "PyPI",
"name" : "social-auth-core"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "5.0.0"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/python-social-auth/social-core/security/advisories/GHSA-x7qq-23vw-7pfg"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-57177"
}, {
"type" : "WEB",
"url" : "https://github.com/python-social-auth/social-core/pull/1808"
}, {
"type" : "WEB",
"url" : "https://github.com/python-social-auth/social-core/commit/4d332820e6b0583fde522956105a0e2beced5335"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/python-social-auth/social-core"
}, {
"type" : "WEB",
"url" : "https://github.com/python-social-auth/social-core/releases/tag/5.0.0"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-352" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-09-24T19:56:39Z",
"nvd_published_at" : "2026-09-24T18:17:14Z"
}
}