How severe is CVE-2013-6440?

CVE-2013-6440 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2013-6440 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6440?

CVE-2013-6440 primarily affects Internet2 Opensaml. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6440?

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

When was CVE-2013-6440 published?

CVE-2013-6440 was published on 2014-02-14 and last updated on 2026-06-17.

CVE-2013-6440

CVE-2013-6440 is a medium-severity vulnerability in Internet2 Opensaml with a CVSS 2.0 base score of 5.0. 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-200.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Internet2 Opensaml
Published: 2014-02-14
Last modified: 2026-06-17

Description

The (1) BasicParserPool, (2) StaticBasicParserPool, (3) XML Decrypter, and (4) SAML Decrypter in Shibboleth OpenSAML-Java before 2.6.1 set the expandEntityReferences property to true, which allows remote attackers to conduct XML external entity (XXE) attacks via a crafted XML DOCTYPE declaration.

Frequently asked questions

What is CVE-2013-6440?: The (1) BasicParserPool, (2) StaticBasicParserPool, (3) XML Decrypter, and (4) SAML Decrypter in Shibboleth OpenSAML-Java before 2.6.1 set the expandEntityReferences property to true, which allows remote attackers to conduct XML external entity (XXE) attacks via a crafted XML DOCTYPE declaration.
How severe is CVE-2013-6440?: CVE-2013-6440 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2013-6440 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6440?: CVE-2013-6440 primarily affects Internet2 Opensaml. In total, 12 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6440?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-6440 published?: CVE-2013-6440 was published on 2014-02-14 and last updated on 2026-06-17.

References

Affected products (12)

cpe:2.3:a:internet2:opensaml:2.0:*:*:*:*:*:*:*
cpe:2.3:a:internet2:opensaml:2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:internet2:opensaml:2.2.0:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:*:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.4.3:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:shibboleth:opensaml:2.5.3:*:*:*:*:*:*:*

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