Validation of SignedInfo

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

• CISA KEV Not listed.
• EPSS 0.0019, the 8th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 31 Oct 2026, 14:04 UTC First seen by agentprime
2. 31 Oct 2026, 14:04 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-ww7x-3gxh-qm6r
• OSV: GHSA-ww7x-3gxh-qm6r
• github.com/simplesamlphp/xml-security/security/advisories/GHSA-ww7x-3gxh-qm6r
• nvd.nist.gov/vuln/detail/CVE-2023-49087
• github.com/simplesamlphp/xml-security/commit/f509e3083dd7870cce5880c804b5122317287581
• github.com/simplesamlphp/xml-security
• github.com/simplesamlphp/xml-security/blob/master/src/XML/SignedElementTrait.php

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.