7.5

CVE-2026-3416: wso2 api_control_plane Use of Insufficiently Random Values

CVSS: 7.5v3.1HighAnalyzed
Published 03-09-2026Last modified 03-09-2026
Open JSON

Vulnerability summary

CVE-2026-3416 is a high (CVSS 7.5) Use of Insufficiently Random Values vulnerability in wso2 api_control_plane. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.36%
0%100%
Low · +0.10 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 03-09-2026
    PublishedVulnerability first disclosed.
  2. 03-09-2026
    Last modifiedVulnerability information updated.

Description

The API Publisher component previously used a non-cryptographic pseudorandom number generator (PRNG) to create shared secrets for Webhook HMAC validation. This PRNG lacks sufficient entropy for security-sensitive operations, allowing a sophisticated attacker to predict future secrets. This enables malicious actors to forge event payloads with valid HMAC signatures, bypassing the API Gateway's authenticity verification. Successful exploitation could allow an attacker to predict shared secrets used for Webhook HMAC validation and forge event payloads with valid signatures. This may enable bypassing API Gateway authenticity checks, leading to unauthorized event injection, data manipulation, or downstream system compromise.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.10 pp

From 0.26% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.36%

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

Wso24 products
  • api_control_plane≥ 4.5.0, < 4.5.0.53
  • api_manager≥ 4.1.0, < 4.1.0.253 | ≥ 4.2.0, < 4.2.0.193 | ≥ 4.3.0, < 4.3.0.104 | ≥ 4.4.0, < 4.4.0.68 | ≥ 4.5.0, < 4.5.0.52
  • wso2 api control plane≥ 4.5.0, < 4.5.0.53
  • wso2 api manager≥ 4.1.0, < 4.1.0.253 | ≥ 4.2.0, < 4.2.0.193 | ≥ 4.3.0, < 4.3.0.104 | ≥ 4.4.0, < 4.4.0.68 | ≥ 4.5.0, < 4.5.0.52

1 vendor · 4 products

References

1 links