CVE-2025-43960: Vrana/adminer Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-mqh4-2mm8-g7w9
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CVSS 8.6
CWE-502
Published
Advisory Summary

CVE-2025-43960 is a HIGH (CVSS 8.6) denial of service vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Vrana/adminer libraries in the Packagist ecosystem. The issue involves adminer php object injection issue leads to denial of service. Remediation is available in the latest vendor maintenance releases.

CVE-2025-43960 at a Glance

CVE Identifier CVE-2025-43960
GHSA Identifier GHSA-mqh4-2mm8-g7w9
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Vrana/adminer
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2025-43960

To remediate this vulnerability, upgrade all affected Vrana/adminer dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vrana/adminer fixed: Latest secure release 
Upgrade vrana/adminer to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for vrana/adminer

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-43960, inspect your project dependencies for Vrana/adminer:

inspect dependencies for vrana/adminer

Analyze the terminal output to locate any version of Vrana/adminer in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Vrana/adminer, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.

CVE-2025-43960 Affected Vrana/adminer Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
vrana/adminer
 Packagist
≤ 4.8.1

References

NVD — CVE-2025-43960 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-43960
Vrana/adminer Source Repository REPOSITORY
https://github.com/far00t01/CVE-2025-43960
Vrana/adminer Source Repository REPOSITORY
https://github.com/vrana/adminer

Frequently Asked Questions

What is CVE-2025-43960?
CVE-2025-43960 is a security vulnerability in Vrana/adminer involving Adminer PHP Object Injection issue leads to Denial of Service under CWE-502: Deserialization of Untrusted Data.
Which Vrana/adminer versions are affected?
Affected versions include releases prior to current release patches across affected packages: vrana/adminer.
What version fixes CVE-2025-43960?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is vrana/adminer affected?
Yes, vrana/adminer is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-43960?
CVE-2025-43960 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.
What CWE is associated with CVE-2025-43960?
CVE-2025-43960 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Packagist dependencies for CVE-2025-43960?
Run the dependency tree command: 'inspect dependencies for vrana/adminer'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mqh4-2mm8-g7w9",
  "modified" : "2025-08-25T21:50:01Z",
  "published" : "2025-08-25T15:32:00Z",
  "aliases" : [ "CVE-2025-43960" ],
  "summary" : "Adminer PHP Object Injection issue leads to Denial of Service",
  "details" : "Adminer 4.8.1, when using Monolog for logging, allows a Denial of Service (memory consumption) via a crafted serialized payload (e.g., using s:1000000000), leading to a PHP Object Injection issue. Remote, unauthenticated attackers can trigger this by sending a malicious serialized object, which forces excessive memory usage, rendering Adminer’s interface unresponsive and causing a server-level DoS. While the server may recover after several minutes, multiple simultaneous requests can cause a complete crash requiring manual intervention.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "vrana/adminer"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "4.8.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-43960"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/far00t01/CVE-2025-43960"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vrana/adminer"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-08-25T21:50:01Z",
    "nvd_published_at" : "2025-08-25T14:15:30Z"
  }
}