CVE-2026-40597

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Source
https://cve.org/CVERecord?id=CVE-2026-40597
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40597.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-40597
Aliases
Published
2026-05-22T19:29:46.728Z
Modified
2026-07-08T08:05:11.122450582Z
Severity
  • 7.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
Summary
MantisBT has a Content Security Policy bypass via attachments
Details

Mantis Bug Tracker (MantisBT) is an open source issue tracker. In versions 2.28.1 and below, given any pre-existing XSS / HTML injection vulnerability, an attacker can bypass the Content Security Policy's script-src directive by uploading a crafted attachment to any issue that, when accessed via the filedownload.php link, will be downloaded with a valid JavaScript MIME type resulting in script execution. The uploaded payload must be sniffed as a valid JavaScript MIME type by PHP finfo (see filecreate_finfo() API function). Non-JavaScript MIME types will not get imported in a <script> tag by the browser, due to response header X-Content-Type-Options being set to nosniff, which requires all imported JavaScript files to be a valid JavaScript MIME type. This issue has been fixed in version 2.28.2.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40597.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-358",
        "CWE-79"
    ]
}
References

Affected packages

Git / github.com/mantisbt/mantisbt

Affected ranges

Type
GIT
Repo
https://github.com/mantisbt/mantisbt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9e3bee2e7b909f4e3596985892b8bc8bee9e0bfe
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.28.2"
        }
    ]
}

Affected versions

release-1.*
release-1.2.0a1
release-1.2.0a2
release-1.2.0a3
release-1.2.0rc1
release-1.3.0-beta.1
release-1.3.0-beta.2
release-1.3.0-beta.3
release-1.3.0-rc.1
release-1.3.0-rc.2
release-2.*
release-2.0.0
release-2.0.0-beta.1
release-2.0.0-beta.2
release-2.0.0-beta.3
release-2.0.0-rc.1
release-2.0.0-rc.2
release-2.1.0
release-2.10.0
release-2.11.0
release-2.12.0
release-2.13.0
release-2.14.0
release-2.15.0
release-2.16.0
release-2.17.0
release-2.18.0
release-2.19.0
release-2.2.0
release-2.20.0
release-2.21.0
release-2.22.0
release-2.23.0
release-2.24.0
release-2.25.0
release-2.26.0
release-2.27.0
release-2.28.0
release-2.28.1
release-2.3.0
release-2.4.0
release-2.5.0
release-2.6.0
release-2.7.0
release-2.8.0
release-2.9.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-40597.json"