Authenticated privilege escalation via unescaped SAML attributes
Published Jun 8, 2026 · Updated Jun 8, 2026
XML injection in samlify before 2.13.0 allows remote authenticated users to add trusted authorization attributes to signed SAML assertions. The replaceTagsByValue function escapes quoted attribute placeholders but inserts AttributeValue element text raw, permitting XML markup that closes the value and adds attributes before signing. Exploitation requires an IdP that builds assertions from attacker-controlled profile values and an SP that authorizes roles or groups from those attributes.
Summary
What happened
XML injection in samlify before 2.13.0 allows remote authenticated users to add trusted authorization attributes to signed SAML assertions. The replaceTagsByValue function escapes quoted attribute placeholders but inserts AttributeValue element text raw, permitting XML markup that closes the value and adds attributes before signing. Exploitation requires an IdP that builds assertions from attacker-controlled profile values and an SP that authorizes roles or groups from those attributes.
The record
- CVE
- CVE-2026-46490
- Published
- Jun 8, 2026
- Updated
- Jun 8, 2026
- Vendor
- Tony Ngan
- Product
- samlify
- Classifications
- CWE-91, CAPEC-250, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 8, 2026CVE publishedPublication date reported by the CVE source.
- Jun 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.13.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- attribute_injection.ts proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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