{"answers":{"affected":"9 open source packages ship an affected version, including moodle/moodle and moodle. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-23921 in the wild and no public exploit code.","fix":"Upgrade moodle/moodle to a fixed version for your release line: 3.9.19, 3.11.12, 4.0.6 or 4.1.1.","what":"CVE-2023-23921 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 17 Feb 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-23921 and fix it if it is affected.\n\nWhat it is: CVE-2023-23921 is a medium-severity cross-site scripting vulnerability in Moodle Moodle, published on 17 Feb 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-23921 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- moodle/moodle (Packagist): affected all versions; fixed in 3.9.19\n- moodle/moodle (Packagist): affected all versions; fixed in 3.9.19\n- moodle/moodle (Packagist): affected from 3.10.0; fixed in 3.11.12\n- moodle/moodle (Packagist): affected from 3.10.0; fixed in 3.11.12\n- moodle/moodle (Packagist): affected from 4.0.0-beta; fixed in 4.0.6\n- moodle/moodle (Packagist): affected from 4.0.0-beta; fixed in 4.0.6\n- moodle/moodle (Packagist): affected from 4.1.0-beta; fixed in 4.1.1\n- moodle/moodle (Packagist): affected from 4.1.0-beta; fixed in 4.1.1\n- moodle (Bitnami): affected from 3.9.0; fixed in 3.9.19, 3.11.12, 4.0.6, 4.1.1\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-2023-23921/ (Markdown: https://insights.sbomify.com/CVE-2023-23921/index.md)","id":"CVE-2023-23921","markdown":"https://insights.sbomify.com/CVE-2023-23921/index.md","name":"CVE-2023-23921","record":{"aliases":["BIT-moodle-2023-23921","GHSA-97qf-pq7x-964m","UBUNTU-CVE-2023-23921"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Moodle LMS","requires_auth":"none","summary":"Remote attackers can execute arbitrary scripts in victims' browsers via crafted links due to insufficient sanitization of returnurl parameters in Moodle.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"fedora","cpe":[{"product":"moodle","vendor":"moodle"}],"cvss":{"score":6.1,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"The vulnerability was found Moodle which exists due to insufficient sanitization of user-supplied data in some returnurl parameters. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website. This flaw allows a remote attacker to perform cross-site scripting (XSS) attacks.","ecosystems":["Bitnami","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":"Moodle: reflected xss risk in some returnurl parameters","id":"CVE-2023-23921","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"moodle:moodle","products":["moodle:moodle"],"type":"xss","year":"2023"},"n_packages":9,"n_references":3,"next":{"headline":"Moodle: reflected xss risk in blog search","id":"CVE-2023-23922"},"packages":[{"ecosystem":"Bitnami","fixed":["3.9.19","3.11.12","4.0.6","4.1.1"],"introduced":["3.9.0","3.11.0","4.0.0","4.1.0"],"last_affected":[],"package":"moodle","purl":"pkg:bitnami/moodle","source":"BIT-moodle-2023-23921"},{"ecosystem":"Packagist","fixed":["3.9.19"],"introduced":["0"],"last_affected":[],"package":"moodle/moodle","purl":null,"source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["3.9.19"],"introduced":["0"],"last_affected":[],"package":"moodle/moodle","purl":"pkg:composer/moodle/moodle","source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["3.11.12"],"introduced":["3.10.0"],"last_affected":[],"package":"moodle/moodle","purl":null,"source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["3.11.12"],"introduced":["3.10.0"],"last_affected":[],"package":"moodle/moodle","purl":"pkg:composer/moodle/moodle","source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["4.0.6"],"introduced":["4.0.0-beta"],"last_affected":[],"package":"moodle/moodle","purl":null,"source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["4.0.6"],"introduced":["4.0.0-beta"],"last_affected":[],"package":"moodle/moodle","purl":"pkg:composer/moodle/moodle","source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["4.1.1"],"introduced":["4.1.0-beta"],"last_affected":[],"package":"moodle/moodle","purl":null,"source":"GHSA-97qf-pq7x-964m"},{"ecosystem":"Packagist","fixed":["4.1.1"],"introduced":["4.1.0-beta"],"last_affected":[],"package":"moodle/moodle","purl":"pkg:composer/moodle/moodle","source":"GHSA-97qf-pq7x-964m"}],"prev":{"headline":"Path traversal in Node","id":"CVE-2023-23920"},"products":["moodle:moodle"],"published":"2023-02-17","related":[{"cvss_score":10,"headline":"File upload in n/a","id":"CVE-2006-4935","kev_date_added":null,"published":"2006-09-23"},{"cvss_score":10,"headline":"Moodle does not properly validate module instance id","id":"CVE-2006-4936","kev_date_added":null,"published":"2006-09-23"},{"cvss_score":10,"headline":"Unknown \"front page vulnerability with Moodle servers\" for Moodle before 1.3.2 has unknown impact and attack vectors.","id":"CVE-2004-2233","kev_date_added":null,"published":"2005-07-17"},{"cvss_score":10,"headline":"Cross-site scripting in n/a","id":"CVE-2004-2235","kev_date_added":null,"published":"2005-07-17"},{"cvss_score":10,"headline":"Other in n/a","id":"CVE-2004-2236","kev_date_added":null,"published":"2005-07-17"},{"cvss_score":10,"headline":"Unknown vulnerability in Moodle before 1.3.4 has unknown impact and attack vectors, related to \"strings in Moodle texts.\"","id":"CVE-2004-2237","kev_date_added":null,"published":"2005-07-17"},{"cvss_score":10,"headline":"Multiple unknown vulnerabilities in Moodle before 1.5.1 have unknown impact and attack vectors.","id":"CVE-2005-2247","kev_date_added":null,"published":"2005-07-12"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-02","vendors":["moodle"]},"summary":"Remote attackers can execute arbitrary scripts in victims' browsers via crafted links due to insufficient sanitization of returnurl parameters in Moodle.","url":"https://insights.sbomify.com/CVE-2023-23921/"}