CVE-2026-115910: Social auth core · Python Social Auth is a social authentication and registration mechanism
Affects social-auth-coreSource GCVE Database
Not known to be exploited · CVSS 6.8 Medium · fixed in 6.2.0 : update social-auth-core when convenient.
Data as of 28 Oct 2026, 22:58 UTC
- Patch
- Available – fixed in 6.2.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:NExploitation evidence
Disclosed: evidence found.
CVE published 26 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10social-auth-corepkg:deb/ubuntu/social-auth-core?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSsocial-auth-corepkg:deb/ubuntu/social-auth-core?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 24.04 LTSsocial-auth-corepkg:deb/ubuntu/social-auth-core?arch=source&distro=nobleOther threats | Affected
| Fixed in– |
Ubuntu 22.04 LTSsocial-auth-corepkg:deb/ubuntu/social-auth-core?arch=source&distro=jammyOther threats | Affected
| Fixed in– |
Ubuntu 20.04 LTSsocial-auth-corepkg:deb/ubuntu/social-auth-core?arch=source&distro=focalOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade Python Social Auth to version 6.2.0 or later, where this nonce handling issue is fixed. Ensure that DEFAULT_USE_PKCE is enabled in the OpenIdConnectAuth configuration to enforce PKCE, which mitigates this attack vector. No other specific mitigations are indicated.
Description
Python Social Auth versions prior to 6.2.0 contain a vulnerability in the OpenIdConnectAuth backend where the OpenID Connect nonce is stored globally rather than being bound to the browser session and OAuth state. This allows an attacker who obtains a victim's unused authorization code to reuse it by initiating a separate login with a valid state, bypassing nonce validation and potentially logging in as the victim if PKCE is disabled. The issue is fixed in version 6.2.0.
References
- ubuntu.com/security/CVE-2026-115910 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-115910 (opens in a new tab)
- github.com/python-social-auth/social-core/commit/c2f2ae4663bef19ee8b07f2cf5a2344f9155d826 (opens in a new tab)
- github.com/python-social-auth/social-core/pull/2141 (opens in a new tab)
- github.com/python-social-auth/social-core/security/advisories/ghsa-h2r5-x5m7-3935 (opens in a new tab)
- security-tracker.debian.org/tracker/cve-2026-115910 (opens in a new tab)
- github.com/cveproject/cvelistv5/tree/main/cves/2026/115xxx/cve-2026-115910.json (opens in a new tab)
- github.com/python-social-auth/social-core/releases/tag/6.2.0 (opens in a new tab)
- nvd.nist.gov/vuln/detail/cve-2026-115910 (opens in a new tab)