CVE-2025-62710

Medium

Description

Sakai is a Collaboration and Learning Environment. Prior to versions 23.5 and 25.0, EncryptionUtilityServiceImpl initialized an AES256TextEncryptor password (serverSecretKey) using RandomStringUtils with the default java.util.Random. java.util.Random is a non‑cryptographic PRNG and can be predicted from limited state/seed information (e.g., start time window), substantially reducing the effective search space of the generated key. An attacker who can obtain ciphertexts (e.g., exported or at‑rest strings protected by this service) and approximate the PRNG seed can feasibly reconstruct the serverSecretKey and decrypt affected data. SAK-49866 is patched in Sakai 23.5, 25.0, and trunk.

SeverityMedium
CVSS5.9
Exploit probability—
ProductSakai
PublishedOct 22, 2025
First seenOct 22, 2025
Weakness typeCWE-337CWE-337

How to fix

Update
  • sakailms sakai23.5 or later

Affected products

ProductAffected versionsFixed in
sakailms sakaiv < 23.523.5
org.sakaiproject.kernel:sakai-kernel-implMavenv ≤ 23.3—

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