Improper Input ValidationWeakness · CWE-20

CVE-2026-12787

MEDIUM · 6.3 CVSS v3.1 Published 2026-06-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
69/100
Remediation priority · Elevated
Remotely reachable 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
A vulnerability was found in zhilink 智互联(深圳)科技有限公司 ADP Application Developer Platform 应用开发者平台 1.0.0. This affects an unknown part of the component testConnection Endpoint. The manipulation of the argument jdbcUrl results in deserialization. The attack may be performed from remote. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

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

A deserialization vulnerability exists in the testConnection endpoint of zhilink ADP Application Developer Platform 1.0.0. The jdbcUrl parameter is processed through unsafe deserialization, allowing remote attackers to potentially execute arbitrary code by manipulating this argument. The exploit has been publicly disclosed.

MitigationImplement safe deserialization by validating/sanitizing the jdbcUrl parameter, using whitelisting for allowed connection patterns, and replacing unsafe deserialization with parameterized or safe object instantiation methods for connection testing.

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

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

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 if zhilink ADP Application Developer Platform is installed
    Locate installation directories or running processes for zhilink ADP Application Developer Platform. Check for Java application servers or service processes associated with this product.
    Affected if The product is installed and running on the system
  2. Confirm the installed version is 1.0.0
    Check the product version information through its web interface, configuration files, or installed package metadata. Compare against the affected version 1.0.0.
    Affected if The installed version matches 1.0.0 exactly
  3. Verify the testConnection endpoint exists
    Identify if the application exposes a testConnection endpoint or similar API functionality for database connection testing. Check application routing configuration or API documentation if available.
    Affected if The testConnection endpoint is accessible in the application
  4. Determine if jdbcUrl parameter processing is enabled
    Inspect application configuration or request handling code to confirm that the jdbcUrl parameter is processed by the testConnection functionality.
    Affected if The application accepts and processes a jdbcUrl parameter in connection testing features

If zhilink ADP Application Developer Platform version 1.0.0 is running with an accessible testConnection endpoint that processes jdbcUrl parameters, the environment is affected by this deserialization vulnerability.

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

Implement safe deserialization by validating/sanitizing the jdbcUrl parameter, using whitelisting for allowed connection patterns, and replacing unsafe deserialization with parameterized or safe object instantiation methods for connection testing.

Have this fixed Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,800
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Scan for this in your stack

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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-2026-12787 in production — separate from our analysis above.

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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
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