{"answers":{"affected":"2 open source packages ship an affected version, including verot/class.upload.php. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-6551 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-6551 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-6551 is a medium-severity cross-site scripting vulnerability in class.upload.php, published on 4 Jan 2024. 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-2023-6551 and fix it if it is affected.\n\nWhat it is: CVE-2023-6551 is a medium-severity cross-site scripting vulnerability in class.upload.php, published on 4 Jan 2024. 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-2023-6551 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- verot/class.upload.php (Packagist): affected all versions up to 2.1.6; no fix listed\n- verot/class.upload.php (Packagist): affected all versions up to 2.1.6; no fix listed\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-2023-6551/ (Markdown: https://insights.sbomify.com/CVE-2023-6551/index.md)","id":"CVE-2023-6551","markdown":"https://insights.sbomify.com/CVE-2023-6551/index.md","name":"CVE-2023-6551","record":{"aliases":["GHSA-v6f4-jwv9-682w"],"analysis":{"component_type":"library","fix_type":"workaround","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"PHP file upload library","requires_auth":"low_privilege","summary":"Stored XSS in class.upload.php allows attackers to inject scripts via uploaded files, requiring developers to implement extension whitelisting and content-type enforcement.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[{"product":"class.upload.php","vendor":"verot"}],"cvss":{"score":5.4,"severity":"medium","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"As a simple library, class.upload.php does not perform an in-depth check on uploaded files, allowing a stored XSS vulnerability when the default configuration is used. \n\nDevelopers must be aware of that fact and use extension whitelisting accompanied by forcing the server to always provide content-type based on the file extension. \n\nThe README has been updated to include these guidelines.","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":false,"headline":"Stored XSS in class.upload.php","id":"CVE-2023-6551","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2023"},"n_packages":2,"n_references":2,"next":{"headline":"Open redirect in TasmoAdmin","id":"CVE-2023-6552"},"packages":[{"ecosystem":"Packagist","fixed":[],"introduced":["0"],"last_affected":["2.1.6"],"package":"verot/class.upload.php","purl":null,"source":"GHSA-v6f4-jwv9-682w"},{"ecosystem":"Packagist","fixed":[],"introduced":["0"],"last_affected":["2.1.6"],"package":"verot/class.upload.php","purl":"pkg:composer/verot/class.upload.php","source":"GHSA-v6f4-jwv9-682w"}],"prev":{"headline":"Citrix NetScaler ADC and NetScaler Gateway Buffer Overflow","id":"CVE-2023-6549"},"products":["class.upload.php"],"published":"2024-01-04","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":"US public information, NVD API terms","name":"NVD"},{"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":"2025-06-03","vendors":["class.upload.php"]},"summary":"Stored XSS in class.upload.php allows attackers to inject scripts via uploaded files, requiring developers to implement extension whitelisting and content-type enforcement.","url":"https://insights.sbomify.com/CVE-2023-6551/"}