mantisbt Mantis Bug Tracker up to 2.28.1 XHTML file_download.php file_show_inline_token HTML injection

CVSS Meta Temp Score
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in mantisbt Mantis Bug Tracker up to 2.28.1. Affected is the function file_show_inline_token of the file file_download.php of the component XHTML Handler. This manipulation causes HTML injection. This vulnerability is tracked as CVE-2026-44657. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in mantisbt Mantis Bug Tracker up to 2.28.1. It has been declared as problematic. Affected by this vulnerability is the function file_show_inline_token of the file file_download.php of the component XHTML Handler. The manipulation with an unknown input leads to a html injection vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

Mantis Bug Tracker (MantisBT) is an open source issue tracker. Prior to 2.28.2, using show_inline=1 parameter and a valid file_show_inline_token CSRF token on file_download.php, an attacker can execute code by uploading a crafted XHTML attachment referencing a JavaScript attachment. This vulnerability is fixed in 2.28.2.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-44657 since 05/07/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

By approaching the search of inurl:file_download.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.28.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-33023). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: HTML injection
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Mantis Bug Tracker 2.28.2

Timelineinfo

05/07/2026 CVE reserved
05/28/2026 +21 days Advisory disclosed
05/28/2026 +0 days VulDB entry created
07/21/2026 +54 days VulDB entry last update

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-44657 (🔒)
GCVE (CVE): GCVE-0-2026-44657
GCVE (VulDB): GCVE-100-366937
EUVD: 🔒

Entryinfo

Created: 05/28/2026 23:05
Updated: 07/21/2026 19:11
Changes: 05/28/2026 23:05 (70), 05/29/2026 01:23 (1), 07/21/2026 19:11 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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