SAML authentication bypass via Incorrect XPath selector

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 0.11, the 95th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

1. 10 Sept 2024, 18:50 UTC Confirmed by the CVE List
2. 10 Sept 2024, 19:15 UTC Confirmed by NVD
3. 31 Oct 2026, 15:16 UTC First seen by agentprime
4. 31 Oct 2026, 15:16 UTC Confirmed by OSV

Sources

• GitHub Advisory Database: GHSA-jw9c-mfg7-9rx2
• OSV: GHSA-jw9c-mfg7-9rx2
• github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2
• github.com/omniauth/omniauth-saml/security/advisories/GHSA-cvp8-5r8g-fhvq
• nvd.nist.gov/vuln/detail/CVE-2024-45409
• github.com/SAML-Toolkits/ruby-saml/commit/1ec5392bc506fe43a02dbb66b68741051c5ffeae
• github.com/SAML-Toolkits/ruby-saml/commit/4865d030cae9705ee5cdb12415c654c634093ae7
• github.com/omniauth/omniauth-saml/commit/4274e9d57e65f2dcaae4aa3b2accf831494f2ddd
• github.com/SAML-Toolkits/ruby-saml
• github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-saml/CVE-2024-45409.yml
• github.com/rubysec/ruby-advisory-db/blob/master/gems/omniauth-saml/GHSA-cvp8-5r8g-fhvq.yml
• github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2024-45409.yml

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.