Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw…
Priority LOW 37CWE-476Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-476.
Summary
Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw involving the session recovery feature. The flaw is exploitable (for a daemon crash) on systems not using this feature if a crafted cookie is supplied.
Why it matters now
EPSS 0.02 80th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:* | 3.0.0 to before 3.2.2 | Vulnerable | Shibboleth |
- cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.2.2 Vulnerable ·Shibboleth
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-31826
- 2026-10-03 Alias added: GHSA-rqpx-m7mv-mxxf
References
More Shibboleth Service Provider vulnerabilities
- TI-2023-09078 Insecure folder permissions in the Windows installation path of Shibboleth Service… CVSS 3.1HIGH 7.3
- TI-2017-12399 shibsp/metadata/DynamicMetadataProvider.cpp in the Dynamic MetadataProvider plugin in… CVSS 3.0HIGH 8.1
- TI-2019-13825 Shibboleth Service Provider (SP) 3.x before 3.1.0 shipped a spec file that calls chown on… CVSS 3.1HIGH 7.8
- TI-2010-02353 The keygen.sh script in Shibboleth SP 2.0 (located in /usr/local/etc/shibboleth by… CVSS 3.1HIGH 7.5
- TI-2021-09888 Shibboleth Service Provider before 3.2.1 allows content injection because template… CVSS 3.1MEDIUM 5.3
- TI-2015-02369 Shibboleth Service Provider (SP) before 2.5.4 allows remote authenticated users to cause… CVSS 2.0MEDIUM 4.0
Sources
- CVE-2021-31826 · CVE Program
- CVE-2021-31826 · NVD
- FIRST EPSS
- GHSA-rqpx-m7mv-mxxf · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences