7.5

CVE-2023-6841: Keycloak: amount of attributes per object is not limited and it may lead to dos

Modified
AliasesCGA-p7vp-69h2-hjr6CGA-rvg7-26cj-vgx7GHSA-w97f-w3hq-36g2
Published 10-09-2024Last modified 08-11-2025

Vulnerability summary

CVE-2023-6841 is a high (CVSS 7.5) Improper Handling of Extra Values vulnerability in redhat keycloak. EPSS estimates a 0.74% chance of exploitation in the next 30 days, higher than 53.9% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.74%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 3
CGA-82W7-62FP-W77FCGA-8986-WM7J-PHQ8CGA-R3Q3-VRF5-PPH3

Timeline

  1. 10-09-2024
    PublishedVulnerability first disclosed.
  2. 08-11-2025
    Last modifiedVulnerability information updated.

Description

A denial of service vulnerability was found in keycloak where the amount of attributes per object is not limited,an attacker by sending repeated HTTP requests could cause a resource exhaustion when the application send back rows with long attribute values.

CVSS metrics

6 scores · 5 sources · 2 versions

EPSS trend

Probability

0.74%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.74% on 22-09-2026

22-09-202622-10-2026

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

Redhat2 products
Chainguard1 product
  • keycloak< 26.1.4-r0
Org.keycloak1 product
  • keycloak-core< 24.0.0
Wolfi1 product
  • keycloak< 26.1.4-r0

4 vendors · 5 products

References

8 links