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PubliccmsApplication

CVE-2025-65836

CRITICAL · 9.1 CVSS v3.1 Published 2025-12-01
No fix yet
No fix has been published. The vendor has not shipped a fixed release or patch. You remain exposed.
See remediation →
100/100
Remediation priority · Urgent
Public exploit 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
PublicCMS V5.202506.b is vulnerable to SSRF. in the chat interface of SimpleAiAdminController.

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
How this class of weakness works · CWE-918

The server can be induced to make requests to a URL an attacker controls, turning it into a proxy into internal networks and cloud metadata services. It's especially dangerous behind a trusted network boundary. The fix is strict allow-listing of destinations and blocking access to internal address ranges.

General guidance for the server-side request forgery (ssrf) class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
PubliccmsApplication
Affected:= 5.202506.b

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
High
Availability
None

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

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.

dbcve · scoped
Recommended fix Moderate confidence

Latest stable PublicCMS release after 5.202506.b (contact vendor for specific security release)

  1. 1. Identify the current PublicCMS installation version by checking the system administration panel or deployment metadata
  2. 2. Download the latest stable PublicCMS release from the official GitHub repository (github.com/sanluan/PublicCMS) or release management system
  3. 3. Review the release notes for version 5.202506.b or later to confirm SSRF vulnerability fixes in SimpleAiAdminController
  4. 4. Back up the existing database and configuration files before upgrading
  5. 5. Deploy the new version following the standard upgrade procedure documented in the PublicCMS installation guide
  6. 6. Verify the chat interface in SimpleAiAdminController is functioning correctly after upgrade
  7. 7. Test that the SSRF vulnerability is remediated by attempting to access internal resources through the chat interface (should be blocked)
Caveat Minor: Review release notes for any configuration or database schema changes that may require migration steps

Generated from the published advisory — verify against the referenced sources before acting.

No vendor fix exists Publiccms has not published a patch for this.

There is no version to upgrade to and no patch to apply. Every affected install stays exposed until the vendor ships a fix — or somebody else builds one.

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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-2025-65836 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
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