CVE-2023-4853

HIGH
MEDIUM Priority: 0.12 BB Relevance: 66/100
Published: 2023-09-20 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Network No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

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

Description

A flaw was found in Quarkus where HTTP security policies are not sanitizing certain character permutations correctly when accepting requests, resulting in incorrect evaluation of permissions. This issue could allow an attacker to bypass the security policy altogether, resulting in unauthorized endpoint access and possibly a denial of service.

References & Advisories (12)

https://access.redhat.com/errata/RHSA-2023:5170
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:5310
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:5337
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:5446
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:5479
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:5480
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:6107
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:6112
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2023:7653
vendor-advisory x_refsource_REDHAT
https://access.redhat.com/security/vulnerabilities/RHSB-2023-002
technical-description x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2238034
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

66 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

8.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.45%
Raw Score 0.014490
Percentile 73.4%
Date 2026-11-04

Intelligence Sources

mitre ref →
nvd ref →