{"answers":{"affected":"2 open source packages ship an affected version, including mantisbt/mantisbt.","exploited":"There is no known exploitation of CVE-2026-34754 in the wild and no public exploit code.","fix":"Upgrade mantisbt/mantisbt to 2.28.2 or later.","what":"CVE-2026-34754 is a medium-severity missing authorization vulnerability in mantisbt, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-34754 and fix it if it is affected.\n\nWhat it is: CVE-2026-34754 is a medium-severity missing authorization vulnerability in mantisbt, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-34754 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-2026-34754/ (Markdown: https://insights.sbomify.com/CVE-2026-34754/index.md)","id":"CVE-2026-34754","markdown":"https://insights.sbomify.com/CVE-2026-34754/index.md","name":"CVE-2026-34754","record":{"aliases":["GHSA-h4x5-gvx6-3rwc"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Issue tracking software","requires_auth":"low_privilege","summary":"Authenticated attackers can upload attachments to private issues they lack access to, compromising data integrity in MantisBT.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-284","name":"Improper Access Control"}],"description":"Mantis Bug Tracker (MantisBT) is an open source issue tracker. Versions 2.28.1 and prior allow an authenticated user to upload attachments to private Issues they are not authorized to access. This issue has been fixed in version 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 allows unauthorized users to upload attachments to restricted issues via REST API","id":"CVE-2026-34754","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"vLLM Affected by Denial of Service via Unbounded Frame Count in video/jpeg Base64 Processing","id":"CVE-2026-34755"},"packages":[{"ecosystem":"Packagist","fixed":["2.28.2"],"introduced":["0"],"last_affected":[],"package":"mantisbt/mantisbt","purl":null,"source":"GHSA-h4x5-gvx6-3rwc"},{"ecosystem":"Packagist","fixed":["2.28.2"],"introduced":["0"],"last_affected":[],"package":"mantisbt/mantisbt","purl":"pkg:composer/mantisbt/mantisbt","source":"GHSA-h4x5-gvx6-3rwc"}],"prev":{"headline":"vLLM affected by Server-Side Request Forgery (SSRF) in `download_bytes_from_url `","id":"CVE-2026-34753"},"products":["mantisbt"],"published":"2026-05-19","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":"partial"},"state":"PUBLISHED","updated":"2026-05-20","vendors":["mantisbt"]},"summary":"Authenticated attackers can upload attachments to private issues they lack access to, compromising data integrity in MantisBT.","url":"https://insights.sbomify.com/CVE-2026-34754/"}