AionApplication · Hcltech

CVE-2025-52659

HIGH · 7.5 CVSS v3.1 Published 2026-01-19
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
HCL AION version 2 is affected by a Cacheable HTTP Response vulnerability. This may lead to unintended storage of sensitive or dynamic content, potentially resulting in unauthorized access or information disclosure.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

HCL AION version 2 fails to set proper HTTP cache-control headers, allowing sensitive or dynamic responses to be stored in intermediate caches (proxies, CDNs, browsers). An attacker with access to these caches could retrieve cached sensitive data.

MitigationConfigure HTTP responses to use appropriate cache-control directives (e.g., no-store, no-cache, private) for sensitive endpoints to prevent caching of dynamic content.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
AionApplication
Affected:= 2.0.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed HCL AION version
    Locate and read the version information for your HCL AION installation (check installation directory, version file, or product metadata)
    Affected if Your installed version is exactly 2.0.0
  2. Inspect HTTP response headers for cache-control directives
    Send HTTP requests to your HCL AION endpoints and examine the response headers, specifically looking for cache-control header presence and value
    Affected if The HTTP responses lack cache-control headers or contain values that allow caching (e.g., missing no-store, no-cache, or private directives)
  3. Verify sensitive endpoints for caching vulnerability
    Test dynamic or sensitive endpoints (such as authentication, user data, or administrative interfaces) by making repeated requests and checking if responses can be cached by intermediaries
    Affected if Sensitive endpoints return responses that could be stored in intermediate caches (proxies, CDNs, browsers)

You are affected if you are running HCL AION version 2.0.0 and your HTTP responses lack proper cache-control headers to prevent caching of sensitive data

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Configure HTTP responses to use appropriate cache-control directives (e.g., no-store, no-cache, private) for sensitive endpoints to prevent caching of dynamic content.

Fix this in Aion Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-52659 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data