UBUNTU-CVE-2026-115910

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Source
https://ubuntu.com/security/CVE-2026-115910
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-115910
Upstream
Published
2026-10-26T17:17:00Z
Modified
2026-10-28T20:17:11Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:20.04:LTS / social-auth-core

Package

Name
social-auth-core
Purl
pkg:deb/ubuntu/social-auth-core?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-social-auth-core",
            "binary_version":  "3.1.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json"

Ubuntu:22.04:LTS / social-auth-core

Package

Name
social-auth-core
Purl
pkg:deb/ubuntu/social-auth-core?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.0-1.1
4.*
4.1.0-1
4.2.0-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-social-auth-core",
            "binary_version":  "4.2.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json"

Ubuntu:24.04:LTS / social-auth-core

Package

Name
social-auth-core
Purl
pkg:deb/ubuntu/social-auth-core?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.4.2-2
4.5.3-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-social-auth-core",
            "binary_version":  "4.5.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json"

Ubuntu:26.10 / social-auth-core

Package

Name
social-auth-core
Purl
pkg:deb/ubuntu/social-auth-core?arch=source&distro=stonking

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.8.3-1
5.*
5.0.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-social-auth-core",
            "binary_version":  "5.0.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json"

Ubuntu:26.04:LTS / social-auth-core

Package

Name
social-auth-core
Purl
pkg:deb/ubuntu/social-auth-core?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

4.*
4.6.1-1
4.8.1-1
4.8.3-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "python3-social-auth-core",
            "binary_version":  "4.8.3-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-115910.json"