{"answers":{"affected":"2 open source packages ship an affected version, including baserproject/basercms. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-30879 in the wild and no public exploit code.","fix":"Upgrade baserproject/basercms to 5.2.3 or later.","what":"CVE-2026-30879 is a medium-severity cross-site scripting vulnerability in Basercms Basercms, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-30879 and fix it if it is affected.\n\nWhat it is: CVE-2026-30879 is a medium-severity cross-site scripting vulnerability in Basercms Basercms, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-30879 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- baserproject/basercms (Packagist): affected all versions; fixed in 5.2.3\n- baserproject/basercms (Packagist): affected all versions; fixed in 5.2.3\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-2026-30879/ (Markdown: https://insights.sbomify.com/CVE-2026-30879/index.md)","id":"CVE-2026-30879","markdown":"https://insights.sbomify.com/CVE-2026-30879/index.md","name":"CVE-2026-30879","record":{"aliases":["GHSA-jmq3-x8q7-j9qm"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"baserCMS framework","requires_auth":"none","summary":"Attackers can inject malicious scripts into blog posts, potentially stealing user sessions or executing code in victim browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"basercms","vendor":"basercms"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/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":"baserCMS is a website development framework. Prior to version 5.2.3, baserCMS has a cross-site scripting vulnerability in blog posts. This issue has been patched in version 5.2.3.","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":"baserCMS: Cross-site scripting vulnerability in blog post","id":"CVE-2026-30879","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":"basercms:basercms","products":["basercms:basercms"],"type":"xss","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"baserCMS: OS command injection vulnerability in installer","id":"CVE-2026-30880"},"packages":[{"ecosystem":"Packagist","fixed":["5.2.3"],"introduced":["0"],"last_affected":[],"package":"baserproject/basercms","purl":null,"source":"GHSA-jmq3-x8q7-j9qm"},{"ecosystem":"Packagist","fixed":["5.2.3"],"introduced":["0"],"last_affected":[],"package":"baserproject/basercms","purl":"pkg:composer/baserproject/basercms","source":"GHSA-jmq3-x8q7-j9qm"}],"prev":{"headline":"baserCMS: Mail Form Acceptance Bypass via Public API","id":"CVE-2026-30878"},"products":["basercms"],"published":"2026-03-31","related":[{"cvss_score":9.8,"headline":"baserCMS File Uploader Remote Code Execution (RCE) vulnerability","id":"CVE-2023-25654","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":9.8,"headline":"baserCMS allows any file to be uploaded","id":"CVE-2023-25655","kev_date_added":null,"published":"2023-03-23"},{"cvss_score":9.8,"headline":"baserCMS SQL Injection vulnerability","id":"CVE-2017-10842","kev_date_added":null,"published":"2017-08-28"},{"cvss_score":9.2,"headline":"baserCMS: OS command injection vulnerability in installer","id":"CVE-2026-30880","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":9.1,"headline":"baserCMS: OS Command Injection Leading to Remote Code Execution (RCE)","id":"CVE-2026-21861","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":9.1,"headline":"baserCMS: OS Command Injection in the baserCMS Update Functionality","id":"CVE-2026-30877","kev_date_added":null,"published":"2026-03-31"},{"cvss_score":9.1,"headline":"OS Command Injection Vulnerability and Potential Zip Slip Vulnerability","id":"CVE-2021-41243","kev_date_added":null,"published":"2021-11-26"}],"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":"partial"},"state":"PUBLISHED","updated":"2026-03-31","vendors":["baserproject"]},"summary":"Attackers can inject malicious scripts into blog posts, potentially stealing user sessions or executing code in victim browsers.","url":"https://insights.sbomify.com/CVE-2026-30879/"}