CVE-2026-121553

MediumCVSS 4.8/10Last modified Nov 7, 2026

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.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

CWE-338

Affected software

No affected versions have been published.

Timeline

Published: Nov 3, 2026
Last modified: Nov 7, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-1215545.9cordova-plugin-advanced-http 1.5.0 through 3.3.1 contains an information disclosure vulnerability that leaks cookies to third-party hosts be CVE-2026-1215557.5Foxel through 2.4.0 contains a missing authentication vulnerability that allows unauthenticated attackers to read files by requesting the /a CVE-2026-1215568.3FastBee through 2.1.0 contains an insecure direct object reference vulnerability in ProductController that allows authenticated tenant users CVE-2026-1215575.9WPPConnect Server through 2.10.74 contains a missing authentication vulnerability that allows unauthenticated attackers to send WhatsApp mes CVE-2026-1215584.3AuditPilot before commit 4669c93 contains an authorization bypass vulnerability in _metadata_allowed in rag/agentic_rag.py that allows authe CVE-2026-1215597.2GLPI 10.0.0 before 10.0.28 and 11.0.0 before 11.0.10 contains a privilege escalation vulnerability that allows authenticated users to obtain CVE-2026-1215607.1LogChimp 0.9.0-alpha.1 before 0.9.3 contains an authorization bypass vulnerability that allows authenticated post authors to modify any othe CVE-2026-1215617.7Label Studio before 1.23.2 (label-studio-sdk before 2.1.2) contains a server-side request forgery vulnerability that allows authenticated us CVE-2026-1215625.3CTFd 3.1.0 before 3.8.7 contains an information disclosure vulnerability in the /api/v1/teams list endpoint that exposes non-public team cus CVE-2026-1215641.8Incomplete Comparison with Missing Factors (CWE-1023) in merge_chats() (whatstk/utils/chat_merge.py), reached from BaseChat.merge(), in what CVE-2026-1215657.4Tanium addressed an improper certificate validation vulnerability in multiple products. Products have been updated to distrust several inter CVE-2026-121576.4The BetterDocs - Knowledge Base Docs & FAQ Solution for Elementor & Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scr