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Fencer Vulns
medium 4.0

CVE-2025-31335 json

The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely…

published 2025-03-28 19 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-14769

cvss
4.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

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).

Patch / fix

  • Shibboleth OpenSAML C++ library 3.3.1
  • opensaml Debian 12 3.2.1-3+deb12u1
  • opensaml Debian 14, Debian 13 3.3.1-1

debian advisories DEBIAN-CVE-2025-31335

  • opensaml Ubuntu 20.04 LTS 3.0.1-1ubuntu0.1
  • opensaml Ubuntu 22.04 LTS 3.2.1-1ubuntu0.1
  • opensaml Ubuntu 24.04 LTS 3.2.1-4.1ubuntu0.24.04.1
  • opensaml2 Ubuntu Pro 16.04 LTS 2.5.5-1ubuntu0.1+esm1
  • opensaml2 Ubuntu Pro 18.04 LTS 2.6.1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2025-31335

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • opensaml SLE Module for Server Applications 15 SP7, SLE Module for Server Applications 15 SP6, openSUSE Leap 15.6 3.1.0-150300.3.3.1
  • opensaml SLES LTSS Extended Security 12 SP5 2.5.5-3.6.1

suse advisories SUSE-SU-2025:01500-1SUSE-SU-2025:1501-1SUSE-SU-2025:1500-1

  • opensaml openSUSE Tumbleweed 3.3.1-2.1

opensuse advisories openSUSE-SU-2025:14959-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-31335 updated cvss 4.0

opensaml-core: Signature Forgery in OpenSAML

  • Red Hat Logging Subsystem for Red Hat OpenShift opensaml-core Red Hat Integration Camel K 1 opensaml-core Red Hat JBoss Enterprise Application Platform 7 opensaml-core Red Hat JBoss Enterprise Application Platform 8 opensaml-core Red Hat JBoss Enterprise Application Platform Expansion Pack opensaml-core
    affected: workaround, no fix available “Fix deferred”
  • Red Hat build of Apache Camel 4 for Quarkus 3 quarkus-cxf-bom, quarkus-camel-bom Red Hat build of Apache Camel for Spring Boot 4 opensaml-core Red Hat Fuse 7 opensaml-core Red Hat JBoss Enterprise Application Platform 8 org.jboss.eap-jboss-eap-xp Red Hat JBoss Enterprise Application Platform Expansion Pack org.jboss.eap-jboss-eap-xp Red Hat Single Sign-On 7 opensaml-core
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
19 mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Affected products

  • Shibboleth OpenSAML C++ library

Classification

Weakness
  • CWE-347 Improper Verification of Cryptographic Signature

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.