CVE-2020-25781: Mantisbt/mantisbt MantisBT Unauthorized Users Able To Vulnerability

MODERATE
Advisory Identifier: GHSA-xjmx-cprh-646r
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CVSS 4.3
CWE-863
Published
Advisory Summary

CVE-2020-25781 is a MODERATE (CVSS 4.3) mantisbt unauthorized users able to vulnerability (CWE-863: Incorrect Authorization) affecting Mantisbt/mantisbt libraries in the Packagist ecosystem. The issue involves mantisbt unauthorized users able to access private files. Remediation is available by upgrading affected packages to version 2.24.3.

CVE-2020-25781 at a Glance

CVE Identifier CVE-2020-25781
GHSA Identifier GHSA-xjmx-cprh-646r
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-863: Incorrect Authorization
Affected Product Mantisbt/mantisbt
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

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

How to Fix CVE-2020-25781

To remediate this vulnerability, upgrade all affected Mantisbt/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: 2.24.3 
Upgrade mantisbt/mantisbt to 2.24.3
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-2020-25781, inspect your project dependencies for Mantisbt/mantisbt:

inspect dependencies for mantisbt/mantisbt

Analyze the terminal output to locate any version of Mantisbt/mantisbt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.24.3), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Mantisbt/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

An issue was discovered in file_download.php in MantisBT before 2.24.3. Users without access to view private issue notes are able to download the (supposedly private) attachments linked to these notes by accessing the corresponding file download URL directly.

CVE-2020-25781 Affected Mantisbt/mantisbt Versions

1 component(s)
Fixed Versions:
2.24.3
Product / Package Ecosystem Affected Versions Fixed Version
mantisbt/mantisbt
 Packagist
< 2.24.3
2.24.3

References

NVD — CVE-2020-25781 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25781
Mantisbt/mantisbt Source Repository REPOSITORY
https://github.com/mantisbt/mantisbt
mantisbt.org/bugs/view.php WEB
https://mantisbt.org/bugs/view.php?id=27039
Security Fix Commit FIX COMMIT
http://github.com/mantisbt/mantisbt/commit/5595c90f11c48164331a20bb9c66098980516e93
Security Fix Commit FIX COMMIT
http://github.com/mantisbt/mantisbt/commit/9de20c09e5a557e57159a61657ce62f1a4f578fe

Frequently Asked Questions

What is CVE-2020-25781?
CVE-2020-25781 is a security vulnerability in Mantisbt/mantisbt involving MantisBT unauthorized users able to access private files under CWE-863: Incorrect Authorization.
Which Mantisbt/mantisbt versions are affected?
Affected versions include releases prior to 2.24.3 across affected packages: mantisbt/mantisbt.
What version fixes CVE-2020-25781?
Upgrading to 2.24.3 (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 2.24.3. Upgrade your dependency to 2.24.3 or later.
What is the CVSS score of CVE-2020-25781?
CVE-2020-25781 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-25781?
CVE-2020-25781 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Packagist dependencies for CVE-2020-25781?
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-xjmx-cprh-646r",
  "modified" : "2025-05-29T14:09:17Z",
  "published" : "2022-05-24T17:29:51Z",
  "aliases" : [ "CVE-2020-25781" ],
  "summary" : "MantisBT unauthorized users able to access private files",
  "details" : "An issue was discovered in file_download.php in MantisBT before 2.24.3. Users without access to view private issue notes are able to download the (supposedly private) attachments linked to these notes by accessing the corresponding file download URL directly.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "mantisbt/mantisbt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.24.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-25781"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mantisbt/mantisbt"
  }, {
    "type" : "WEB",
    "url" : "https://mantisbt.org/bugs/view.php?id=27039"
  }, {
    "type" : "WEB",
    "url" : "http://github.com/mantisbt/mantisbt/commit/5595c90f11c48164331a20bb9c66098980516e93"
  }, {
    "type" : "WEB",
    "url" : "http://github.com/mantisbt/mantisbt/commit/9de20c09e5a557e57159a61657ce62f1a4f578fe"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-29T14:09:17Z",
    "nvd_published_at" : "2020-09-30T21:15:00Z"
  }
}