Improper Verification of Cryptographic Signature in Cortex XSOAR/XSIAM Microsoft Teams Integration
CVE-2026-0234 is a high-severity improper verification of cryptographic signature vulnerability in the Microsoft Teams Marketplace integration for Palo Alto Networks Cortex XSOAR and Cortex XSIAM. The flaw affects integration versions 1.5.0 through 1.5.51. According to the provided content, the integration improperly verifies a cryptographic signature, allowing a remote attacker to spoof or forge a signature that is accepted by the affected component. This can enable an unauthenticated attacker to access and modify protected resources handled through the Microsoft Teams integration without user interaction.
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Impact, mitigation & remediation
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Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An improper verification of cryptographic signature vulnerability in the Microsoft Teams integration for Palo Alto Networks Cortex XSOAR and Cortex XSIAM that could allow unauthenticated remote attackers to access and modify sensitive data.
Improper verification of cryptographic signature vulnerability in the Cortex XSOAR Microsoft Teams integration.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.