CVE-2026-87952
SAML SSO - Service Provider - Moderately critical - Insufficient replay protection - SA-CONTRIB-2026-150
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
SAML SSO - Service Provider - Moderately critical - Insufficient replay protection - SA-CONTRIB-2026-150
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
- Record
CVE-2026-87952- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
EUVDEUVD-2026-107849
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
- Record
EUVD-2026-107849- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-899f-rjw2-fh3g
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider ...
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
- Record
GHSA-899f-rjw2-fh3g- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
NVD
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
- Record
CVE-2026-87952- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
OSV
SAML SSO - Service Provider - Moderately critical - Insufficient replay protection - SA-CONTRIB-2026-150
Authentication Bypass by Capture-replay vulnerability in Drupal SAML SSO - Service Provider allows Remote Services with Stolen Credentials. This issue affects SAML SSO - Service Provider versions: from 0.0.0 to 3.2.0.
- Record
CVE-2026-87952- CVSS 3.1
- 3.1 Low
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N - Weakness
- CWE-294
- Updated
- 2026-11-02
OSVDRUPAL-CONTRIB-2026-150 No score
This module allows you to configure your Drupal site as a SAML 2.0 Service Provider so that users can authenticate through an external identity provider.
The module does not sufficiently prevent reuse of previously accepted SAML assertions. Under certain circumstances, a valid assertion may be replayed within its validity period, potentially allowing repeated authentication attempts using the same assertion.
This vulnerability is mitigated by the fact that an attacker must first obtain a valid SAML assertion and can only reuse it during the assertion's validity period.
- Record
DRUPAL-CONTRIB-2026-150- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
drupal/miniorange_samlPackagist:https://packages.drupal.org/8 |
before 3.2.0 | 3.2.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-87952 is a low vulnerability (CVSS 3.1) in Drupal Saml Sso - Service Provider, published September 9, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.22%, the 12th percentile. Fixed in drupal/miniorange_saml 3.2.0.