Dashboard / CVE-2021-38299

CVE-2021-38299

CRITICAL
INFO Priority: 0.18 BB Relevance: 80/100
Published: 2021-09-27 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

Webauthn Framework 3.3.x before 3.3.4 has Incorrect Access Control. An attacker that controls a user's system is able to login to a vulnerable service using an attached FIDO2 authenticator without passing a check of the user presence.

Weakness Classification (1)

Affected Software (2)

VendorProductVersion
spomky-labs webauthn_framework 3.3.0 – 3.3.4
spomky-labs webauthn_framwork < 3.2.9

References & Advisories (2)

https://github.com/web-auth/webauthn-framework/releases
Release Notes Third Party Advisory

Bug Bounty Relevance

80 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.8 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.80%
Raw Score 0.018000
Percentile 78.8%
Date 2026-11-13

EPSS Trend

2026-11-13
0.01800
2026-11-12
0.01800
2026-11-10
0.01800
2026-11-09
0.01800
2026-11-08
0.01800
2026-11-07
0.01800
2026-11-06
0.01800
2026-11-05
0.01800

Intelligence Sources

nvd ref →

External Links