No VulnCrest analysis published for this CVE yet. Below is the original CNA/NVD description, unmodified.
Description
Cotonti through 1.0.0 generates registration and email-change validation tokens with md5(microtime()), allowing attackers to bypass email-ownership verification by predicting tokens. Attackers can derive the generation time from the HTTP Date header and compute candidate tokens offline. They then submit these tokens to the users.register.php validate handler to activate accounts or confirm email addresses they do not control.
Exploits & detection
No public PoC or detection template found yet.
Timeline
- Published: 03 Nov 2026
- Last modified upstream: 07 Nov 2026
Sources & licenses
- CVE / CVSS / CWE
- NVD record ↗ (unmodified). This product uses the NVD API but is not endorsed or certified by the NVD. CVE® © The MITRE Corporation.
- Exploitation
- CISA KEV (CC0) · EPSS by FIRST.org
- References used for the analysis
- https://github.com/Cotonti/Cotonti
- https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.functions.php#L97
- https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.profile.php#L116
- https://github.com/Cotonti/Cotonti/blob/1.0.0/modules/users/inc/users.register.php#L148
- https://github.com/Cotonti/Cotonti/issues/1904
- https://github.com/Cotonti/Cotonti/pull/1905
- https://www.vulncheck.com/advisories/cotonti-through-1.0.0-predictable-validation-tokens-via-md5-microtime
- https://github.com/Cotonti/Cotonti/issues/1904
- Analysis, summary and remediation
- © VulnCrest