What’s Vulnerable › Vulnerabilities

CVE-2025-35432: CISA Thorium does not rate limit account verification email messages

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-09-17 · updated 2026-06-17
• Weakness: CWE-400

Description

CISA Thorium does not rate limit requests to send account verification email messages. A remote unauthenticated attacker can send unlimited messages to a user who is pending verification. Fixed in 1.1.1 by adding a rate limit set by default to 10 minutes.

Affected products

• CISA Thorium: 1.1.0

References

• https://github.com/cisagov/thorium/commit/7c94a0b9bc2dc55e0c307360452f348bac06820c#diff-bf9baa11b76cd169902a976bd17a5a6ee95a4098b2d3d150ba7d8f85b7e21dc9R281-R334
• https://github.com/cisagov/thorium/releases/tag/1.1.1
• https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json
• https://www.cve.org/CVERecord?id=CVE-2025-35432

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