Unauthenticated verification email flooding in CISA Thorium
CVE-2025-35432 is an email abuse and denial-of-service vulnerability in CISA Thorium’s account verification workflow. According to the provided content, Thorium did not rate limit requests that trigger sending account verification email messages. As a result, a remote unauthenticated attacker could repeatedly invoke the verification-email mechanism for a user account that is in a pending-verification state, causing the application to send unlimited verification messages. The issue was fixed in Thorium 1.1.1 by adding a rate limit with a default interval of 10 minutes.
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Impact
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Mitigation
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Exploits
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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
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Unknown
Unknown
An unauthenticated denial-of-service condition and mail abuse issue in verification systems.
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.