8.8

CVE-2026-4208: Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)

Analyzed
Published 17-03-2026Last modified 24-03-2026

Vulnerability summary

CVE-2026-4208 is a high (CVSS 8.8) vulnerability in mrsilaz mfa_mail. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 19.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.7, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
0.27%
0%100%
Low · -0.18 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 17-03-2026
    PublishedVulnerability first disclosed.
  2. 24-03-2026
    Last modifiedVulnerability information updated.

Description

The extension fails to properly reset the generated MFA code after successful authentication. This leads to a possible MFA bypass for future login attempts by providing an empty string as MFA code to the extensions MFA provider.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.27%

Chance of exploitation in the next 30 days

Percentile

20%

Versus all other CVEs

30-day change

Decrease -0.18 pp

From 0.45% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Mrsilaz1 product
Typo31 product

2 vendors · 2 products

References

1 links