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Server-Side Request Forgery (SSRF)Weakness · CWE-918

CVE-2026-5803

MEDIUM · 6.3 CVSS v3.1 Published 2026-04-08
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable Zero-click Patch available

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
A security flaw has been discovered in bigsk1 openai-realtime-ui up to 188ccde27fdf3d8fab8da81f3893468f53b2797c. The affected element is an unknown function of the file server.js of the component API Proxy Endpoint. Performing a manipulation of the argument Query results in server-side request forgery. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The patch is named 54f8f50f43af97c334a881af7b021e84b5b8310f. It is suggested to install a patch to address this issue.

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 →

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

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

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
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

Pull latest code after commit 54f8f50f43af97c334a881af7b021e84b5b8310f (rolling release - no version number)

  1. Locate the server.js file in the openai-realtime-ui project
  2. Apply the changes from commit 54f8f50f43af97c334a881af7b021e84b5b8310f to server.js, which addresses SSRF in the API Proxy Endpoint by validating/sanitizing the Query argument before making server-side requests
  3. Review the patch to ensure input validation is added for the Query parameter to prevent arbitrary URL fetching
  4. After applying the patch, restart the service to load the fixed code
  5. Verify the fix by testing that the API Proxy Endpoint now properly validates URLs and rejects malicious SSRF payloads

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

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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-2026-5803 in production — separate from our analysis above.

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What this is

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  • Version or environment caveats, and links to real fixes
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