Improper signature verification in Shibboleth OpenSAML C++ library
Priority LOW 18CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 5 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-347.
Summary
The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely on non-XML signatures).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00247 16th percentileScored 2026-11-07
Fix Partial OpenSAML C++ library (Shibboleth): 3.3.1Red Hat: 5 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Shibboleth | OpenSAML C++ library | before 3.3.1 | 3.3.1 | Patch available | CNA |
- OpenSAML C++ library VendorShibboleth Affected before 3.3.1 Fixed in 3.3.1 Patch available CNA
Remediation
- Fix · CNA OpenSAML C++ library (Shibboleth) Fixed in 3.3.1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Red Hat Integration Camel K 1 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 8 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
Not affected: 6 products
- Red Hat Fuse 7
- Red Hat JBoss Enterprise Application Platform 8
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Single Sign-On 7
- Red Hat build of Apache Camel 4 for Quarkus 3
- Red Hat build of Apache Camel for Spring Boot 4
Timeline
- 2026-10-02 Threatist record created from CVE-2025-31335
- 2026-10-03 Alias added: GHSA-8f4c-9gmv-rfm8
References
More Shibboleth vulnerabilities
- TI-2023-09078 Insecure folder permissions in the Windows installation path of Shibboleth Service… CVSS 3.1HIGH 7.3
- TI-2025-09124 Unauthenticated SQL Injection Vulnerability in Shibboleth Service Provider CVSS 3.1CRITICAL 9.1
- TI-2022-08074 The OIDC OP plugin before 3.0.4 for Shibboleth Identity Provider allows server-side… CVSS 3.1HIGH 8.2
- TI-2023-18477 Shibboleth XMLTooling before 3.2.4, as used in OpenSAML and Shibboleth Service Provider… CVSS 3.1HIGH 7.5
- TI-2017-12400 The DynamicMetadataProvider class in saml/saml2/metadata/impl/DynamicMetadataProvider.cpp… CVSS 3.0HIGH 8.1
- TI-2021-11820 Shibboleth Service Provider 3.x before 3.2.2 is prone to a NULL pointer dereference flaw… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-31335 · CVE Program
- CVE-2025-31335 · NVD
- FIRST EPSS
- GHSA-8f4c-9gmv-rfm8 · GitHub Advisory Database · CC BY 4.0
- CVE-2025-31335 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences