Medium severity6.5NVD Advisory· Published Sep 26, 2026

CVE-2026-100678

Description

stoatchat before 0.15.5 fails to enforce account-level attempt limits on MFA login challenges, allowing attackers who know a password to guess TOTP codes with only IP-based rate limiting. Attackers can reuse MFA challenge tickets across multiple failed attempts and distribute guesses across IP addresses to bypass rate limiting and gain account access.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Stoatchat/stoatchatllm-fuzzy
Range: <0.15.5

Patches

Vulnerability mechanics

References

github.com/stoatchat/stoatchat/security/advisories/GHSA-6877-g673-f5r8nvd
www.vulncheck.com/advisories/stoatchat-before-0.15.5-mfa-brute-force-via-insufficient-rate-limitingnvd

News mentions

No linked articles in our index yet.

cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000