{"answers":{"affected":"2 open source packages ship an affected version, including mantisbt/mantisbt.","exploited":"There is no known exploitation of CVE-2026-44657 in the wild and no public exploit code.","fix":"Upgrade mantisbt/mantisbt to 2.28.2 or later.","what":"CVE-2026-44657 is a high-severity cross-site scripting vulnerability in mantisbt, published on 28 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-44657 and fix it if it is affected.\n\nWhat it is: CVE-2026-44657 is a high-severity cross-site scripting vulnerability in mantisbt, published on 28 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-44657 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- mantisbt/mantisbt (Packagist): affected all versions; fixed in 2.28.2\n- mantisbt/mantisbt (Packagist): affected all versions; fixed in 2.28.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-44657/ (Markdown: https://insights.sbomify.com/CVE-2026-44657/index.md)","id":"CVE-2026-44657","markdown":"https://insights.sbomify.com/CVE-2026-44657/index.md","name":"CVE-2026-44657","record":{"aliases":["GHSA-p6fr-rxq7-xcg8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Issue tracker","requires_auth":"low_privilege","summary":"An attacker can execute arbitrary code via stored XSS by uploading crafted XHTML attachments in MantisBT.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"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.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"MantisBT: Stored XSS in File Download","id":"CVE-2026-44657","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2026"},"n_packages":2,"n_references":4,"next":{"headline":"Zen Browser: RSS Live-Folder Item URLs Are Not Scheme-Restricted Before Trusted Tab Creation","id":"CVE-2026-44658"},"packages":[{"ecosystem":"Packagist","fixed":["2.28.2"],"introduced":["0"],"last_affected":[],"package":"mantisbt/mantisbt","purl":null,"source":"GHSA-p6fr-rxq7-xcg8"},{"ecosystem":"Packagist","fixed":["2.28.2"],"introduced":["0"],"last_affected":[],"package":"mantisbt/mantisbt","purl":"pkg:composer/mantisbt/mantisbt","source":"GHSA-p6fr-rxq7-xcg8"}],"prev":{"headline":"Vim: OS Command Injection via 'path' completion","id":"CVE-2026-44656"},"products":["mantisbt"],"published":"2026-05-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-29","vendors":["mantisbt"]},"summary":"An attacker can execute arbitrary code via stored XSS by uploading crafted XHTML attachments in MantisBT.","url":"https://insights.sbomify.com/CVE-2026-44657/"}