Vulnerability-Lookup

CVE-2026-40607 (GCVE-0-2026-40607)

Vulnerability from cvelistv5 – Published: 2026-05-22 19:39 – Updated: 2026-05-26 18:51

Title

MantisBT is Vulnerable to Stored XSS Through its Saved-Filter Owner Column

Summary

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.11.0 through 2.28.1, a Stored XSS vulnerability is caused by incorrect escaping of a saved filter's owner, allowing an attacker to inject arbitrary HTML on systems where $g_show_user_realname = ON. Note that By default, only users with Manager access level or above can save their filters publicly. This issue has been fixed in version 2.28.2. If developers are unable to update immediately, they can work around this issue by preventing display of users' real names (set $g_ show_user_realname = OFF; in configuration), and restricting the ability to store filters (set $g_stored_query_create_threshold / $g_stored_query_create_shared_threshold to NOBODY).

Severity

7.5 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M

References

3 references

URL	Tags
https://github.com/mantisbt/mantisbt/security/adv…	x_refsource_CONFIRM
https://github.com/mantisbt/mantisbt/commit/44f49…	x_refsource_MISC
https://mantisbt.org/bugs/view.php?id=37015	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
mantisbt	mantisbt	Affected: >= 2.1.0, < 2.28.2

Show details on NVD website

JSON

To clipboard

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              "content": {
                "id": "CVE-2026-40607",
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                "timestamp": "2026-05-26T18:51:03.130533Z",
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        }
      ],
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      "title": "MantisBT is Vulnerable to Stored XSS Through its Saved-Filter Owner Column",
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FKIE_CVE-2026-40607

Vulnerability from fkie_nvd - Published: 2026-05-22 20:16 - Updated: 2026-06-17 10:45

Severity

7.5 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/mantisbt/mantisbt/commit/44f490bcf20fd491c1b8f3fc9dd041d8c2a30010
	security-advisories@github.com	https://github.com/mantisbt/mantisbt/security/advisories/GHSA-f633-865q-2mhh
	security-advisories@github.com	https://mantisbt.org/bugs/view.php?id=37015

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mantisbt",
          "vendor": "mantisbt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.1.0, \u003c 2.28.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.11.0 through 2.28.1, a Stored XSS vulnerability is caused by incorrect escaping of a saved filter\u0027s owner, allowing an attacker to inject arbitrary HTML on systems where $g_show_user_realname = ON. Note that By default, only users with Manager access level or above can save their filters publicly. This issue has been fixed in version 2.28.2. If developers are unable to update immediately, they can work around this issue by preventing display of users\u0027 real names (set $g_ show_user_realname = OFF; in configuration), and restricting the ability to store filters (set $g_stored_query_create_threshold / $g_stored_query_create_shared_threshold to NOBODY)."
    }
  ],
  "id": "CVE-2026-40607",
  "lastModified": "2026-06-17T10:45:31.663",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/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",
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          "options": [
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  "references": [
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      "url": "https://github.com/mantisbt/mantisbt/commit/44f490bcf20fd491c1b8f3fc9dd041d8c2a30010"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-f633-865q-2mhh"
    },
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      "url": "https://mantisbt.org/bugs/view.php?id=37015"
    }
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  "vulnStatus": "Deferred",
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        {
          "lang": "en",
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        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-F633-865Q-2MHH

Vulnerability from github – Published: 2026-05-11 19:35 – Updated: 2026-06-08 23:20

Summary

MantisBT is Vulnerable to Stored XSS in Saved-Filter Owner Column

Details

Incorrect escaping of a saved filter's owner allows an attacker to inject arbitrary HTML on systems where $g_show_user_realname = ON.

Impact

Cross-site scripting (XSS).

Note that By default, only users with Manager access level or above can save their filters publicly

Patches

44f490bcf20fd491c1b8f3fc9dd041d8c2a30010

Workarounds

Prevent display of users' real name (set $g_ show_user_realname = OFF; in configuration)
Restrict ability to store filters (set $g_stored_query_create_threshold / $g_stored_query_create_shared_threshold to NOBODY

Credits

Thanks to siunam (Tang Cheuk Hei) for discovering and responsibly reporting the issue.

Severity

7.5 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.28.1"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "mantisbt/mantisbt"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.1.0"
            },
            {
              "fixed": "2.28.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40607"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T19:35:05Z",
    "nvd_published_at": "2026-05-22T20:16:34Z",
    "severity": "HIGH"
  },
  "details": "Incorrect escaping of a saved filter\u0027s owner allows an attacker to inject arbitrary HTML on systems where $g_show_user_realname = ON.\n\n### Impact\nCross-site scripting (XSS).\n\nNote that By default, only users with *Manager* access level or above can save their filters publicly\n\n### Patches\n- 44f490bcf20fd491c1b8f3fc9dd041d8c2a30010\n\n### Workarounds\n- Prevent display of users\u0027 real name (set `$g_ show_user_realname = OFF;` in configuration)\n- Restrict ability to store filters (set $`g_stored_query_create_threshold` / $`g_stored_query_create_shared_threshold` to `NOBODY` \n\n### Credits\nThanks to siunam (Tang Cheuk Hei) for discovering and responsibly reporting the issue.",
  "id": "GHSA-f633-865q-2mhh",
  "modified": "2026-06-08T23:20:30Z",
  "published": "2026-05-11T19:35:05Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/security/advisories/GHSA-f633-865q-2mhh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40607"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mantisbt/mantisbt/commit/44f490bcf20fd491c1b8f3fc9dd041d8c2a30010"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/mantisbt/mantisbt"
    },
    {
      "type": "WEB",
      "url": "https://mantisbt.org/bugs/view.php?id=37015"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "MantisBT is Vulnerable to Stored XSS in Saved-Filter Owner Column"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-40607 (GCVE-0-2026-40607)

FKIE_CVE-2026-40607

GHSA-F633-865Q-2MHH

Impact

Patches

Workarounds

Credits

Tags

Sightings

Nomenclature