CISA Thorium does not properly invalidate previously used tokens when resetting passwords.
CVE-2025-35433 is a high-severity vulnerability in Thorium from CISA, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 1.1.1 as the first without the flaw, so updating Thorium to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.28% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Thorium to 1.1.1 or a later version.
- Read the advisory on raw.githubusercontent.com for workarounds and exact fixed builds.
Affected products and versions
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 2.3 | Low | CNA |
| CVSS 3.1 | 5.0 | Medium | CNA |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
CISA Thorium does not properly invalidate previously used tokens when resetting passwords. An attacker that possesses a previously used token could still log in after a password reset. Fixed in 1.1.1.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Third-party and government advisories
- cve.org/CVERecord?id=CVE-2025-35433Third Party Advisory
Other vulnerabilities in Thorium
- 7.5 High severity
- 9.8 Critical severity
- 7.5 High severity
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