{"answers":{"affected":"2 open source packages ship an affected version, including xpressengine/xpressengine. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-26642 in the wild and no public exploit code.","fix":"Upgrade xpressengine/xpressengine to 3.0.15 or later.","what":"CVE-2021-26642 is a high-severity vulnerability in XEHub XE3 XpresesEngine, published on 20 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-26642 and fix it if it is affected.\n\nWhat it is: CVE-2021-26642 is a high-severity vulnerability in XEHub XE3 XpresesEngine, published on 20 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-26642 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- xpressengine/xpressengine (Packagist): affected all versions; fixed in 3.0.15\n- xpressengine/xpressengine (Packagist): affected all versions; fixed in 3.0.15\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-2021-26642/ (Markdown: https://insights.sbomify.com/CVE-2021-26642/index.md)","id":"CVE-2021-26642","markdown":"https://insights.sbomify.com/CVE-2021-26642/index.md","name":"CVE-2021-26642","record":{"aliases":["GHSA-8r5j-22j5-w4cm"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"XpressEngine CMS","requires_auth":"low_privilege","summary":"Remote attackers can upload arbitrary files to XpressEngine bulletin boards, leading to arbitrary code execution on the server.","user_interaction":"not_required","vuln_class":"file_upload"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"krcert","cpe":[{"product":"xpressengine","vendor":"xpressengine"}],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-434","name":"Unrestricted Upload of File with Dangerous Type"}],"description":"When uploading an image file to a bulletin board developed with XpressEngine, a vulnerability in which an arbitrary file can be uploaded due to insufficient verification of the file. A remote attacker can use this vulnerability to execute arbitrary code on the server where the bulletin board is running.","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":"XpressEngine file upload vulnerability","id":"CVE-2021-26642","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"file_upload","year":"2021"},"n_packages":2,"n_references":1,"next":{"headline":"SQL injection in Mangboard WP BASIC","id":"CVE-2021-26644"},"packages":[{"ecosystem":"Packagist","fixed":["3.0.15"],"introduced":["0"],"last_affected":[],"package":"xpressengine/xpressengine","purl":null,"source":"GHSA-8r5j-22j5-w4cm"},{"ecosystem":"Packagist","fixed":["3.0.15"],"introduced":["0"],"last_affected":[],"package":"xpressengine/xpressengine","purl":"pkg:composer/xpressengine/xpressengine","source":"GHSA-8r5j-22j5-w4cm"}],"prev":{"headline":"WISA Smart Wing CMS File Download Vulnerability","id":"CVE-2021-26639"},"products":["XE3 XpresesEngine"],"published":"2023-01-20","related":[{"cvss_score":5.5,"headline":"XpressEngine Update Query sql injection","id":"CVE-2011-10003","kev_date_added":null,"published":"2023-02-07"},{"cvss_score":5.4,"headline":"File upload in n/a","id":"CVE-2021-44911","kev_date_added":null,"published":"2022-02-09"},{"cvss_score":5.4,"headline":"Cross-site scripting in n/a","id":"CVE-2021-44912","kev_date_added":null,"published":"2022-02-09"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-03","vendors":["XEHub"]},"summary":"Remote attackers can upload arbitrary files to XpressEngine bulletin boards, leading to arbitrary code execution on the server.","url":"https://insights.sbomify.com/CVE-2021-26642/"}