7.5

CVE-2026-3416

Predictable Pseudorandom Number Generation via Webhook HMAC Secret Generation in Multiple WSO2 Products Allows Forged Event Payloads

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Wso2 ≫ Api Control Plane Version >= 4.5.0 < 4.5.0.53
Wso2 ≫ Api Manager Version >= 4.1.0 < 4.1.0.253
Wso2 ≫ Api Manager Version >= 4.2.0 < 4.2.0.193
Wso2 ≫ Api Manager Version >= 4.3.0 < 4.3.0.104
Wso2 ≫ Api Manager Version >= 4.4.0 < 4.4.0.68
Wso2 ≫ Api Manager Version >= 4.5.0 < 4.5.0.52
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.193
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
ed10eef1-636d-4fbe-9993-6890dfa878f8 5.9 2.2 3.6
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-330 Use of Insufficiently Random Values

The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers.

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2026-5174/
Patch
Vendor Advisory