Security assessments indicate that CVE-2026-63239 presents a notable risk, potentially requiring prompt mitigation.
Status: Received on 29 Jul 2026, 07:16 UTC
Published on: 29 Jul 2026, 07:16 UTC
CVSS Release: version 3
5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVE-2026-63239: A hard-coded AWS IAM credentials vulnerability in Koollab LMS allowed an attacker to access shared multi-tenant S3 buckets and SQS queues, exposing sensitive data and enabling malicious content injection, job manipulation, or email interception.
The exploitability of CVE-2026-63239 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
CVE-2026-63239 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
Above is the CVSS Sub-score Breakdown for CVE-2026-63239, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
Below is the Impact Analysis for CVE-2026-63239, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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