CVE•Published 2023-09-20•Modified 2026-08-04•1 article on news•6 live references•NVD data

CVE-2023-4853Quarkus · Quarkus

Vulnerability data via NVD (ingested)

CVSS v3.1

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 34% of all CVEs

Weaknesses (CWE)

CWE-148Improper Neutralization of Input Leaders CWE-863Incorrect Authorization

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.

Timeline

Published 2023-09-20

Modified 2026-08-04

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2023-4853

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Quarkus Quarkus"

All exposed Quarkus Quarkus instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Quarkus"

HTTP body or banner mentions "Quarkus" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2023-4853