CVE-2026-52882: MantisBT REST And SOAP API Issue Vulnerability

MODERATE
Advisory Identifier: GHSA-3v2j-6fw9-f57c
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CWE-639
Published
Advisory Summary

CVE-2026-52882 is a MODERATE rest and soap api issue vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting MantisBT libraries in the Packagist ecosystem. The issue involves rest and soap api issue update accepts unreleased product versions from updaters. Remediation is available by upgrading affected packages to version 2.28.4.

CVE-2026-52882 at a Glance

CVE Identifier CVE-2026-52882
GHSA Identifier GHSA-3v2j-6fw9-f57c
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product MantisBT
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2026-52882

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

mantisbt/mantisbt fixed: 2.28.4 
Upgrade mantisbt/mantisbt to 2.28.4
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 mantisbt/mantisbt

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-52882, inspect your project dependencies for MantisBT:

inspect dependencies for mantisbt/mantisbt

Analyze the terminal output to locate any version of MantisBT in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.28.4), 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-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In MantisBT, 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

### Impact Users below _report_issues_for_unreleased_versions_threshold_ can assign unreleased product versions. ### Patches - https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f ### Workarounds None ### Resources - https://mantisbt.org/bugs/view.php?id=37065 ### Credits MantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.

CVE-2026-52882 Affected MantisBT Versions

1 component(s)
Fixed Versions:
2.28.4
Product / Package Ecosystem Affected Versions Fixed Version
mantisbt/mantisbt
 Packagist
< 2.28.4
2.28.4

References

GitHub Advisory / Wiki ADVISORY
https://github.com/mantisbt/mantisbt/security/advisories/GHSA-3v2j-6fw9-f57c
Security Fix Commit FIX COMMIT
https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f
MantisBT Source Repository REPOSITORY
https://github.com/mantisbt/mantisbt
MantisBT Security Information SECURITY
https://mantisbt.org/bugs/view.php?id=37065

Frequently Asked Questions

What is CVE-2026-52882?
CVE-2026-52882 is a security vulnerability in MantisBT involving REST and SOAP API Issue Update Accepts Unreleased Product Versions From Updaters under CWE-639: Authorization Bypass Through User-Controlled Key.
Which MantisBT versions are affected?
Affected versions include releases prior to 2.28.4 across affected packages: mantisbt/mantisbt.
What version fixes CVE-2026-52882?
Upgrading to 2.28.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mantisbt/mantisbt affected?
Yes, mantisbt/mantisbt is affected in releases prior to 2.28.4. Upgrade your dependency to 2.28.4 or later.
What CWE is associated with CVE-2026-52882?
CVE-2026-52882 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check Packagist dependencies for CVE-2026-52882?
Run the dependency tree command: 'inspect dependencies for mantisbt/mantisbt'. 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-3v2j-6fw9-f57c",
  "modified" : "2026-07-15T18:41:55Z",
  "published" : "2026-07-15T18:41:55Z",
  "aliases" : [ "CVE-2026-52882" ],
  "summary" : "MantisBT: REST and SOAP API Issue Update Accepts Unreleased Product Versions From Updaters",
  "details" : "### Impact\nUsers below _report_issues_for_unreleased_versions_threshold_ can assign unreleased product versions.\n\n### Patches\n- https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f\n\n### Workarounds\nNone\n\n### Resources\n- https://mantisbt.org/bugs/view.php?id=37065\n\n### Credits\nMantisBT thanks Vishal Shukla for discovering and responsibly reporting the issue.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mantisbt/mantisbt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.28.4"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 2.28.3"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-3v2j-6fw9-f57c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mantisbt/mantisbt/commit/17072d4c322c85f7135ebec3417a6d90b525d12f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mantisbt/mantisbt"
  }, {
    "type" : "WEB",
    "url" : "https://mantisbt.org/bugs/view.php?id=37065"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-15T18:41:55Z",
    "nvd_published_at" : null
  }
}