Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-115910— Python Social Auth: OpenID Connect nonce is not bound to the browser session, so a stolen authorization code logs the attacker in as the victim

Quick assessment

Affected
python-social-auth social-core
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Python Social Auth 是一个用于社交身份验证和注册的机制。在 6.2.0 版本之前， 中的 使用 将 OpenID Connect 的 nonce 值存储在一个共享的 表中；而 和 仅验证 nonce 是否存在且未过期，并未将其与发起登录的浏览器会话及 OAuth state 进行绑定。因此，攻击者若获取了受害者的未使用授权码（authorization code），即可发起一个独立的登录流程以获取适用于攻击者浏览器的有效 state，随后提交受害者的授权码并配合该 state，由于受害者的 non

CVSS 6.8 · Medium
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-115910

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Python Social Auth: OpenID Connect nonce is not bound to the browser session, so a stolen authorization code logs the attacker in as the victim
Source: CVE Program / CVE List V5
Vulnerability Description
Python Social Auth is a social authentication and registration mechanism. Prior to 6.2.0, OpenIdConnectAuth in social_core/backends/open_id_connect.py uses get_and_store_nonce to place the OpenID Connect nonce in a shared OpenIdConnectAssociation table, and get_nonce and validate_claims verify only that the nonce exists and has not expired rather than binding it to the browser session and OAuth state that initiated the login. An attacker who obtains a victim's unused authorization code can start a separate login to obtain valid state for the attacker's browser, submit the victim's code with that state, and pass nonce validation because the victim nonce is globally available. With DEFAULT_USE_PKCE disabled in the default OpenIdConnectAuth configuration, the attacker can be logged in as the victim. This issue is fixed in version 6.2.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对数据真实性的验证不充分
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
python-social-auth social-core < 6.2.0 -

II. Public POCs for CVE-2026-115910

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-115910

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-115910 (2)

Vendor Advisories for CVE-2026-115910 (1)

Vendor Pages for CVE-2026-115910 (1)

IV. Related Vulnerabilities

Same product: social-core
Same vendor: python-social-auth
Same weakness: CWE-345