Add vpatch-CVE-2026-58644 rule and test - #64
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Hello @crowdsec-automation and thank you for your contribution! ❗ It seems that the following scenarios are not part of the 'crowdsecurity/appsec-virtual-patching' collection: 🔴 crowdsecurity/vpatch-CVE-2026-58644 🔴 |
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Hello @crowdsec-automation, ✅ The new VPATCH Rule is compliant, thank you for your contribution! |
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Hello @crowdsec-automation, Scenarios/AppSec Rule are compliant with the taxonomy, thank you for your contribution! |
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Hello @buixor, ✅ The new VPATCH Rule is compliant, thank you for your contribution! |
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Hello @buixor, Scenarios/AppSec Rule are compliant with the taxonomy, thank you for your contribution! |
buixor
approved these changes
Sep 2, 2026
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The rule restricts detection to the SharePoint WS-Federation passive sign-in endpoint
/_trust/default.aspxand requires the expectedwa=wsignin1.0protocol value. It then inspects only thewresultbody parameter, where the attacker-controlled SecurityContextToken and Cookie payload are supplied.The
securitycontexttokenandcookie xmlns=markers identify the crafted WS-Federation token structure without matching the complete BinaryFormatter gadget, which may vary between exploit implementations. Both URI and body argument data are lowercased and URL-decoded to provide case-insensitive matching and correctly inspect the URL-encoded form body.The classification references CVE-2026-58644, exploitation of a public-facing application via
attack.T1190, and insecure deserialization viaCWE-502.Exploit URL: https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-58644.yaml