CVE-2025-35436 CISA Thorium account verification email error handling
An unauthenticated attacker can crash the CISA Thorium application by sending a specially crafted email address during account verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-35436?
CVE-2025-35436 is a medium-severity denial of service vulnerability in CISA Thorium, published on 17 Sep 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CISA Thorium uses '.unwrap()' to handle errors related to account verification email messages. An unauthenticated remote attacker could cause a crash by providing a specially crafted email address or response. Fixed in commit 6a65a27.
Weakness: CWE-248
Which versions are affected by CVE-2025-35436?
It affects 1 product.
Products include Cisa Thorium.
How do I fix CVE-2025-35436?
No fix has been published for CVE-2025-35436 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-35436 being exploited?
There is no known exploitation of CVE-2025-35436 in the wild and no public exploit code.
Other vulnerabilities in CISA Thorium
- CVE-2025-35432 CISA Thorium does not rate limit account verification email messages
- CVE-2025-35430 CISA Thorium insecure downloaded file path validation
- CVE-2025-35431 CISA Thorium LDAP injection
- CVE-2025-35435 CISA Thorium download stream divide by zero
- CVE-2025-35433 CISA Thorium does not properly invalidate previously used tokens
Sources
Also known as GHSA-rjv5-cqp8-h968.