PT-2026-55454 · Packagist · Simplesamlphp/Saml2+1

Publicado 2026-07-02 · Atualizado 2026-07-02 · CVE-2026-49289

OSV

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

This library turned out to be vulnerable to Denial-of-Service attacks using XPath transforms. A mitigation has been put in place to restrict the number of transforms and to restrict transforms to only the transform-algorithms mentioned in the SAML 2.0 Core Specifications (and specifically refuse XPath transforms).

Impact

An attacker is able to send specially crafted messages to any entity relying on SimpleSAMLphp (or directly on this SAML2-library) to be able to perform a Denial-of-Service attack.

Correção

Resource Exhaustion

Enumeração de Fraquezas

CWE-400

Identificadores relacionados

CVE-2026-49289

GHSA-5CJR-MXJ5-WMRX

Produtos afetados

Simplesamlphp/Saml2

Simplesamlphp/Saml2-Legacy

Referências · 3

• https://github.com/simplesamlphp/saml2 · Nota
• https://github.com/simplesamlphp/saml2/security/advisories/GHSA-5cjr-mxj5-wmrx · Nota
• https://osv.dev/vulnerability/GHSA-5cjr-mxj5-wmrx · Aviso do Fabricante