Vulnerability Details CVE-2026-32600
xml-security is a library that implements XML signatures and encryption. Prior to versions 2.3.1 and 1.13.9, XML nodes encrypted with either aes-128-gcm, aes-192-gcm, or aes-256-gcm lack validation of the authentication tag length. An attacker can use this to brute-force an authentication tag, recover the GHASH key, and decrypt the encrypted nodes. It also allows to forge arbitrary ciphertexts without knowing the encryption key. This vulnerability is fixed in 2.3.1 and 1.13.9.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 3.2%
CVSS Severity
CVSS v3 Score 8.2
Products affected by CVE-2026-32600
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cpe:2.3:a:simplesamlphp:xml-security:0.0.1
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cpe:2.3:a:simplesamlphp:xml-security:0.0.10
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cpe:2.3:a:simplesamlphp:xml-security:0.0.11
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cpe:2.3:a:simplesamlphp:xml-security:0.0.2
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cpe:2.3:a:simplesamlphp:xml-security:0.0.3
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cpe:2.3:a:simplesamlphp:xml-security:0.0.4
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cpe:2.3:a:simplesamlphp:xml-security:0.0.5
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cpe:2.3:a:simplesamlphp:xml-security:0.0.6
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cpe:2.3:a:simplesamlphp:xml-security:0.0.7
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cpe:2.3:a:simplesamlphp:xml-security:0.0.8
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cpe:2.3:a:simplesamlphp:xml-security:0.0.9
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cpe:2.3:a:simplesamlphp:xml-security:0.1.0
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cpe:2.3:a:simplesamlphp:xml-security:0.1.1
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cpe:2.3:a:simplesamlphp:xml-security:0.2.0
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cpe:2.3:a:simplesamlphp:xml-security:0.2.1
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cpe:2.3:a:simplesamlphp:xml-security:0.2.2
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cpe:2.3:a:simplesamlphp:xml-security:0.2.3
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cpe:2.3:a:simplesamlphp:xml-security:0.2.4
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cpe:2.3:a:simplesamlphp:xml-security:0.2.5
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cpe:2.3:a:simplesamlphp:xml-security:0.2.6
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cpe:2.3:a:simplesamlphp:xml-security:0.2.7
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cpe:2.3:a:simplesamlphp:xml-security:0.3.0
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cpe:2.3:a:simplesamlphp:xml-security:0.3.1
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cpe:2.3:a:simplesamlphp:xml-security:0.3.2
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cpe:2.3:a:simplesamlphp:xml-security:0.3.3
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cpe:2.3:a:simplesamlphp:xml-security:0.4.0
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cpe:2.3:a:simplesamlphp:xml-security:0.4.1
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cpe:2.3:a:simplesamlphp:xml-security:0.4.2
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cpe:2.3:a:simplesamlphp:xml-security:0.4.3
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cpe:2.3:a:simplesamlphp:xml-security:0.4.4
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cpe:2.3:a:simplesamlphp:xml-security:0.4.5
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cpe:2.3:a:simplesamlphp:xml-security:0.4.6
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cpe:2.3:a:simplesamlphp:xml-security:0.4.7
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cpe:2.3:a:simplesamlphp:xml-security:0.5.0
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cpe:2.3:a:simplesamlphp:xml-security:0.5.1
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cpe:2.3:a:simplesamlphp:xml-security:0.5.2
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cpe:2.3:a:simplesamlphp:xml-security:0.5.3
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cpe:2.3:a:simplesamlphp:xml-security:0.5.4
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cpe:2.3:a:simplesamlphp:xml-security:0.5.5
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cpe:2.3:a:simplesamlphp:xml-security:0.5.6
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cpe:2.3:a:simplesamlphp:xml-security:0.5.7
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cpe:2.3:a:simplesamlphp:xml-security:0.6.0
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cpe:2.3:a:simplesamlphp:xml-security:0.6.1
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cpe:2.3:a:simplesamlphp:xml-security:0.6.2
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cpe:2.3:a:simplesamlphp:xml-security:0.6.3
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cpe:2.3:a:simplesamlphp:xml-security:0.6.4
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cpe:2.3:a:simplesamlphp:xml-security:0.6.5
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cpe:2.3:a:simplesamlphp:xml-security:0.6.6
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cpe:2.3:a:simplesamlphp:xml-security:1.0.0
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cpe:2.3:a:simplesamlphp:xml-security:1.0.1
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cpe:2.3:a:simplesamlphp:xml-security:1.0.2
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cpe:2.3:a:simplesamlphp:xml-security:1.0.3
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cpe:2.3:a:simplesamlphp:xml-security:1.0.4
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cpe:2.3:a:simplesamlphp:xml-security:1.0.5
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cpe:2.3:a:simplesamlphp:xml-security:1.0.6
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cpe:2.3:a:simplesamlphp:xml-security:1.0.7
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cpe:2.3:a:simplesamlphp:xml-security:1.0.8
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cpe:2.3:a:simplesamlphp:xml-security:1.1.0
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cpe:2.3:a:simplesamlphp:xml-security:1.1.1
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cpe:2.3:a:simplesamlphp:xml-security:1.1.2
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cpe:2.3:a:simplesamlphp:xml-security:1.10.0
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cpe:2.3:a:simplesamlphp:xml-security:1.11.0
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cpe:2.3:a:simplesamlphp:xml-security:1.11.1
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cpe:2.3:a:simplesamlphp:xml-security:1.11.2
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cpe:2.3:a:simplesamlphp:xml-security:1.12.0
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cpe:2.3:a:simplesamlphp:xml-security:1.12.1
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cpe:2.3:a:simplesamlphp:xml-security:1.13.0
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cpe:2.3:a:simplesamlphp:xml-security:1.13.1
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cpe:2.3:a:simplesamlphp:xml-security:1.13.2
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cpe:2.3:a:simplesamlphp:xml-security:1.13.3
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cpe:2.3:a:simplesamlphp:xml-security:1.13.4
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cpe:2.3:a:simplesamlphp:xml-security:1.13.5
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cpe:2.3:a:simplesamlphp:xml-security:1.13.6
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cpe:2.3:a:simplesamlphp:xml-security:1.13.7
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cpe:2.3:a:simplesamlphp:xml-security:1.13.8
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cpe:2.3:a:simplesamlphp:xml-security:1.2.0
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cpe:2.3:a:simplesamlphp:xml-security:1.5.0
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cpe:2.3:a:simplesamlphp:xml-security:1.5.1
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cpe:2.3:a:simplesamlphp:xml-security:1.6.0
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cpe:2.3:a:simplesamlphp:xml-security:1.6.1
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cpe:2.3:a:simplesamlphp:xml-security:1.6.10
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cpe:2.3:a:simplesamlphp:xml-security:1.6.11
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cpe:2.3:a:simplesamlphp:xml-security:1.6.12
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cpe:2.3:a:simplesamlphp:xml-security:1.6.2
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cpe:2.3:a:simplesamlphp:xml-security:1.6.3
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cpe:2.3:a:simplesamlphp:xml-security:1.6.4
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cpe:2.3:a:simplesamlphp:xml-security:1.6.5
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cpe:2.3:a:simplesamlphp:xml-security:1.6.6
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cpe:2.3:a:simplesamlphp:xml-security:1.6.7
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cpe:2.3:a:simplesamlphp:xml-security:1.6.8
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cpe:2.3:a:simplesamlphp:xml-security:1.6.9
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cpe:2.3:a:simplesamlphp:xml-security:1.7.0
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cpe:2.3:a:simplesamlphp:xml-security:1.7.1
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cpe:2.3:a:simplesamlphp:xml-security:1.7.2
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cpe:2.3:a:simplesamlphp:xml-security:1.7.3
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cpe:2.3:a:simplesamlphp:xml-security:1.7.4
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cpe:2.3:a:simplesamlphp:xml-security:1.7.5
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cpe:2.3:a:simplesamlphp:xml-security:1.7.6
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cpe:2.3:a:simplesamlphp:xml-security:1.8.0
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cpe:2.3:a:simplesamlphp:xml-security:1.8.1
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cpe:2.3:a:simplesamlphp:xml-security:1.8.2
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cpe:2.3:a:simplesamlphp:xml-security:1.8.3
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cpe:2.3:a:simplesamlphp:xml-security:1.8.4
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cpe:2.3:a:simplesamlphp:xml-security:1.8.5
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cpe:2.3:a:simplesamlphp:xml-security:1.8.6
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cpe:2.3:a:simplesamlphp:xml-security:1.8.7
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cpe:2.3:a:simplesamlphp:xml-security:1.9.0
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cpe:2.3:a:simplesamlphp:xml-security:1.9.1
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cpe:2.3:a:simplesamlphp:xml-security:1.9.2
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cpe:2.3:a:simplesamlphp:xml-security:1.9.3
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cpe:2.3:a:simplesamlphp:xml-security:1.9.4
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cpe:2.3:a:simplesamlphp:xml-security:1.9.5
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cpe:2.3:a:simplesamlphp:xml-security:1.9.6
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cpe:2.3:a:simplesamlphp:xml-security:2.0.0
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cpe:2.3:a:simplesamlphp:xml-security:2.0.1
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cpe:2.3:a:simplesamlphp:xml-security:2.0.2
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cpe:2.3:a:simplesamlphp:xml-security:2.0.3
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cpe:2.3:a:simplesamlphp:xml-security:2.0.4
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cpe:2.3:a:simplesamlphp:xml-security:2.0.5
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cpe:2.3:a:simplesamlphp:xml-security:2.0.6
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cpe:2.3:a:simplesamlphp:xml-security:2.0.7
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cpe:2.3:a:simplesamlphp:xml-security:2.0.8
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cpe:2.3:a:simplesamlphp:xml-security:2.0.9
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cpe:2.3:a:simplesamlphp:xml-security:2.1.0
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cpe:2.3:a:simplesamlphp:xml-security:2.1.1
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cpe:2.3:a:simplesamlphp:xml-security:2.1.2
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cpe:2.3:a:simplesamlphp:xml-security:2.2.0
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cpe:2.3:a:simplesamlphp:xml-security:2.3.0