5.3

CVE-2025-5802: wso2 wso2 api control plane Observable Discrepancy

CVSS: 5.3v3.1MediumDeferred
Published 15-09-2026Last modified 15-09-2026
Open JSON

Vulnerability summary

CVE-2025-5802 is a medium (CVSS 5.3) Observable Discrepancy vulnerability in wso2 wso2 api control plane. EPSS estimates a 0.25% chance of exploitation in the next 30 days, higher than 15.4% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.25%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-09-2026
    PublishedVulnerability first disclosed.
  2. 15-09-2026
    Last modifiedVulnerability information updated.

Description

The self-registration flow accepts user-supplied input for usernames without adequately preventing the disclosure of username existence. When a user attempts to register with an existing username, the system responds with an error message that explicitly indicates the username is already in use. This behavior allows an attacker to discover valid usernames within the system. The discovery of valid usernames can facilitate subsequent attacks such as brute force, social engineering, and targeted phishing campaigns.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.25%

Chance of exploitation in the next 30 days

Percentile

15%

Versus all other CVEs

30-day change

0.00 pp

From 0.25% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.25%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Wso210 products
  • wso2 api control plane≥ 4.5.0, < 4.5.0.56 | ≥ 4.6.0, < 4.6.0.18
  • wso2 api manager≥ 3.1.0, < 3.1.0.354 | ≥ 3.2.0, < 3.2.0.458 | ≥ 3.2.0, < 3.2.0.478 | ≥ 3.2.1, < 3.2.1.96 | ≥ 4.0.0, < 4.0.0.379 | ≥ 4.1.0, < 4.1.0.262 | ≥ 4.2.0, < 4.2.0.200 | ≥ 4.3.0, < 4.3.0.112 | ≥ 4.4.0, < 4.4.0.72 | ≥ 4.5.0, < 4.5.0.55 | ≥ 4.6.0, < 4.6.0.17
  • wso2 carbon identity application authentication framework≥ 5.17.5, < 5.17.5.332 | ≥ 5.18.187, < 5.18.187.330
  • wso2 carbon identity management endpoint util≥ 5.17.5, < 5.17.5.332 | ≥ 5.18.187, < 5.18.187.330 | ≥ 5.23.8, < 5.23.8.213 | ≥ 5.25.92, < 5.25.92.167 | ≥ 7.0.78, < 7.0.78.162
  • wso2 identity server≥ 5.10.0, < 5.10.0.383 | ≥ 5.11.0, < 5.11.0.430 | ≥ 6.0.0, < 6.0.0.257 | ≥ 6.1.0, < 6.1.0.234 | ≥ 6.1.0, < 6.1.0.257 | ≥ 7.0.0, < 7.0.0.133 | ≥ 7.1.0, < 7.1.0.41 | ≥ 7.2.0, < 7.2.0.3

1 vendor · 10 products

References

1 links