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CISA Thorium password reset token invalidation flaw

IdentifiersCVE-2025-35433CWE-613· Insufficient Session Expiration

CVE-2025-35433 is an authentication/session management flaw in CISA Thorium in which previously used tokens are not properly invalidated during a password reset. As described in the provided content, when a user's password is reset, an attacker who already possesses a previously used token can continue to authenticate successfully even after the reset. This indicates the application fails to revoke or invalidate extant authentication material as part of the password reset workflow. The issue is fixed in Thorium 1.1.1.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows continued unauthorized access to an account after a password reset event that should have revoked prior access. This undermines the security purpose of password resets, enabling session persistence or re-authentication by an attacker holding an older valid token. Depending on the privileges of the affected account, this could permit ongoing access to application data and functions despite credential recovery actions by the legitimate user or administrator.

Mitigation

If you can’t patch tonight, do this now.

If immediate upgrade is not possible, reduce exposure by forcing global logout/session revocation for affected accounts after password resets, manually invalidating outstanding authentication tokens where the platform supports it, and monitoring for post-reset logins that use older session or authentication artifacts. Administrators should also review account recovery and token lifecycle controls to ensure password reset events trigger revocation of all existing authentication state.

Remediation

Patch, then assume compromise.

Upgrade CISA Thorium to version 1.1.1 or later, which contains the fix for the token invalidation issue. Ensure the password reset workflow invalidates all previously issued or previously used authentication tokens associated with the account.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
CISAThoriumapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

5 SOURCESView more in app
What this page doesn’t show

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Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity3

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2025-35433
NVD
nvd.nist.gov/vuln/detail/CVE-2025-35433
MITRE CWE · CWE-613
Insufficient Session Expiration
Patch
github.com/cisagov/thorium/commit/7c94a0b9bc2dc55e0c307360452f348bac06820c
Vendor Advisory
raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2025/va-25-259-01.json
Release Notes
github.com/cisagov/thorium/releases/tag/1.1.1