How severe is CVE-2025-31335?

CVE-2025-31335 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2025-31335 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-31335?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-31335 have an EU (EUVD) identifier?

Yes. CVE-2025-31335 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14769.

When was CVE-2025-31335 published?

CVE-2025-31335 was published on 2025-03-28 and last updated on 2026-06-17.

CVE-2025-31335

CVE-2025-31335 is a medium-severity vulnerability with a CVSS 3.x base score of 4.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-347.

Key facts

Severity: Medium (CVSS 3.x base score 4.0)
EPSS exploit prediction: 0% (14th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-14769
Weakness: CWE-347
Published: 2025-03-28
Last modified: 2026-06-17

Description

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).

Frequently asked questions

What is CVE-2025-31335?: 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).
How severe is CVE-2025-31335?: CVE-2025-31335 has a CVSS 3.x base score of 4.0, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2025-31335 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-31335?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-31335 have an EU (EUVD) identifier?: Yes. CVE-2025-31335 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-14769.
When was CVE-2025-31335 published?: CVE-2025-31335 was published on 2025-03-28 and last updated on 2026-06-17.

References

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