CVE-2026-58656: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-fx5h-wv8r-5j9q
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CVSS 7.5
CWE-598
Published
Advisory Summary

CVE-2026-58656 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-598: Use of HTTP Request With Sensitive Query String) affecting Software libraries in the Maven ecosystem. The weakness occurs when the web application uses an http method to process a request, but the request includes sensitive information in the query string.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-58656 at a Glance

CVE Identifier CVE-2026-58656
GHSA Identifier GHSA-fx5h-wv8r-5j9q
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-598: Use of HTTP Request With Sensitive Query String
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/A:N).

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 None (I:N)
Availability None (A:N)

How to Fix CVE-2026-58656

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

Verify Direct and Transitive Dependencies

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

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-58656, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software 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: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-598: Use of HTTP Request With Sensitive Query String, where the web application uses an http method to process a request, but the request includes sensitive information in the query string. In Software, 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

Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token from access logs, proxy logs, browser history, or Referrer headers can create persistent backdoor super-admin accounts and exfiltrate sensitive configuration and user data.

References

GitHub Advisory / Wiki ADVISORY
https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp
NVD — CVE-2026-58656 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-58656
www.vulncheck.com/advisories/grav-api... WEB
https://www.vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter

Frequently Asked Questions

What is CVE-2026-58656?
CVE-2026-58656 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-598: Use of HTTP Request With Sensitive Query String.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-58656?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-58656?
CVE-2026-58656 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-58656?
CVE-2026-58656 is classified under CWE-598: Use of HTTP Request With Sensitive Query String (The web application uses an HTTP method to process a request, but the request includes sensitive information in the query string.).
How can I check Maven dependencies for CVE-2026-58656?
Run the dependency tree command: 'mvn dependency:tree'. 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-fx5h-wv8r-5j9q",
  "modified" : "2026-07-08T15:32:01Z",
  "published" : "2026-07-08T15:32:01Z",
  "aliases" : [ "CVE-2026-58656" ],
  "details" : "Grav API plugin before v1.0.0-rc.16 accepts JWT tokens via the ?token= URL query parameter and responds with Access-Control-Allow-Origin: *, allowing unauthenticated attackers to make fully authenticated cross-origin API requests from any malicious website. Attackers who obtain a leaked JWT token from access logs, proxy logs, browser history, or Referrer headers can create persistent backdoor super-admin accounts and exfiltrate sensitive configuration and user data.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/getgrav/grav/security/advisories/GHSA-hqm9-5xxw-4qxp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-58656"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/grav-api-plugin-cross-origin-admin-account-takeover-via-cors-wildcard-and-jwt-query-parameter"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-598" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-08T14:17:20Z"
  }
}