CVE-2024-52806

SimpleSAMLphp SAML2 has an XXE in parsing SAML messages

HIGH
8.3
CVSS Score
Published: December 2, 2024 at 04:18 PM UTC
Updated: June 17, 2026 at 08:07 AM UTC
1 product affected across 1 vendorSAML2

Using saml2 by simplesamlphp?

Get instant alerts when new vulnerabilities affect saml2 - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
HIGH8.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. When loading an (untrusted) XML document, for example the SAMLResponse, it's possible to induce an XXE. This vulnerability is fixed in 4.6.14 and 5.0.0-alpha.18.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 5.0.0-alpha.1v < 4.6.14v < 5.0.0-alpha.18
Affected range stops below 4.6.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.0.0-alpha.18, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.3HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-611

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card