CVE-2026-55186

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 48/100
Published: 2026-11-03 Modified: 2026-11-12 First seen: 2026-11-03 Status: active

Attack Surface

Network No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: Low
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

Silverstripe MFA provides multi-factor authentication for Silverstripe CMS. Prior to 6.0.0, the CMS 5 password reset flow can issue a logged-in session after a user changes a password but before the user's configured multi-factor authentication challenge is completed. An attacker with access to the user's email account can follow the reset flow and bypass the additional authentication factor. CMS 6 is not affected. This issue is fixed in version 6.0.0.

Affected Software (2)

VendorProductVersion
silverstripe silverstripe-mfa < 6.0.0
silverstripe silverstripe-mfa < 6.0.0

Bug Bounty Relevance

48 / 100
✓ Network accessible
✓ No user interaction

CVSS Score

4.2 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.28%
Raw Score 0.002780
Percentile 20.5%
Date 2026-11-14

EPSS Trend

2026-11-14
0.00278
2026-11-13
0.00278
2026-11-12
0.00278
2026-11-10
0.00278
2026-11-09
0.00278
2026-11-08
0.00278
2026-11-07
0.00278
2026-11-06
0.00278
2026-11-05
0.00278
2026-11-04
0.00278

Intelligence Sources

mitre ref →
nvd ref →