CVE-2025-52636 HCL AION is affected by a improper handling of uploads files Size

What is CVE-2025-52636?

CVE-2025-52636 is a low-severity denial of service vulnerability in HCL AION, published on 16 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

HCL AION is affected by a vulnerability related to the handling of upload size limits. Improper control or validation of upload sizes may allow excessive resource consumption, which could potentially lead to service degradation or denial-of-service conditions under certain scenarios.

Weakness: CWE-400

Which versions are affected by CVE-2025-52636?

It affects 1 product.

Products include Hcltech Aion.

How do I fix CVE-2025-52636?

No fix has been published for CVE-2025-52636 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-52636 being exploited?

There is no known exploitation of CVE-2025-52636 in the wild and no public exploit code.

Other vulnerabilities in HCL AION

• CVE-2025-52650 HCL AION is susceptible to Inline script execution allowed in CSP vulnerability High 8.2
• CVE-2025-52632 HCL AION is susceptible to Missing Secure Attribute in Encrypted Session (SSL) Cookie vulnerability Medium 6.5
• CVE-2025-52644 HCL AION is affected by a vulnerability where certain user actions are not adequately audited or logged. Medium 5.8
• CVE-2025-52627 HCL AION is susceptible to Incorrect Permission Assignment for Critical Resource Medium 5.5
• CVE-2025-52624 HCL AION is susceptible to Bypass of the script allow list configuration vulnerability Medium 5.4

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6r37-9q52-pqr5.