{"answers":{"affected":"3 open source packages ship an affected version, including ghost. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-29484 exists.","fix":"Upgrade ghost to 4.3.3 or later.","what":"CVE-2021-29484 is a medium-severity cross-site scripting vulnerability in TryGhost Ghost, published on 29 Apr 2021. 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-2021-29484 and fix it if it is affected.\n\nWhat it is: CVE-2021-29484 is a medium-severity cross-site scripting vulnerability in TryGhost Ghost, published on 29 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-29484 exists.\n\nAffected packages and fixed versions:\n- ghost (Bitnami): affected from 4.0.0; fixed in 4.3.3\n- ghost (npm): affected from 4.0.0; fixed in 4.3.3\n- ghost (npm): affected from 4.0.0; fixed in 4.3.3\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-2021-29484/ (Markdown: https://insights.sbomify.com/CVE-2021-29484/index.md)","id":"CVE-2021-29484","markdown":"https://insights.sbomify.com/CVE-2021-29484/index.md","name":"CVE-2021-29484","record":{"aliases":["BIT-ghost-2021-29484","GHSA-9fgx-q25h-jxrg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Ghost CMS","requires_auth":"none","summary":"Attackers can hijack Ghost Admin sessions via DOM XSS in an unused preview endpoint, requiring users to click a malicious link.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"ghost","vendor":"ghost"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Ghost is a Node.js CMS. An unused endpoint added during the development of 4.0.0 has left sites vulnerable to untrusted users gaining access to Ghost Admin. Attackers can gain access by getting logged in users to click a link containing malicious code. Users do not need to enter credentials and may not know they've visited a malicious site. Ghost(Pro) has already been patched. We can find no evidence that the issue was exploited on Ghost(Pro) prior to the patch being added. Self-hosters are impacted if running Ghost a version between 4.0.0 and 4.3.2. Immediate action should be taken to secure your site. The issue has been fixed in 4.3.3, all 4.x sites should upgrade as soon as possible. As the endpoint is unused, the patch simply removes it. As a workaround blocking access to /ghost/preview can also mitigate the issue.","ecosystems":["Bitnami","npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-29484.yaml","stars":null,"title":"Ghost CMS \u003c=4.32 - Cross-Site Scripting"}],"tier":"weaponised"},"has_fix":true,"headline":"DOM XSS in Theme Preview","id":"CVE-2021-29484","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"xss","year":"2021"},"n_packages":3,"n_references":4,"next":{"headline":"Remote Code Execution Vulnerability in Session Storage","id":"CVE-2021-29485"},"packages":[{"ecosystem":"Bitnami","fixed":["4.3.3"],"introduced":["4.0.0"],"last_affected":[],"package":"ghost","purl":"pkg:bitnami/ghost","source":"BIT-ghost-2021-29484"},{"ecosystem":"npm","fixed":["4.3.3"],"introduced":["4.0.0"],"last_affected":[],"package":"ghost","purl":null,"source":"GHSA-9fgx-q25h-jxrg"},{"ecosystem":"npm","fixed":["4.3.3"],"introduced":["4.0.0"],"last_affected":[],"package":"ghost","purl":"pkg:npm/ghost","source":"GHSA-9fgx-q25h-jxrg"}],"prev":{"headline":"wikiconfig API leaked private config variables set through ManageWiki","id":"CVE-2021-29483"},"products":["Ghost"],"published":"2021-04-29","related":[{"cvss_score":9.8,"headline":"Arbitrary file upload in Ghost","id":"CVE-2022-27139","kev_date_added":null,"published":"2022-04-12"},{"cvss_score":9.8,"headline":"Arbitrary file upload in Ghost","id":"CVE-2022-28397","kev_date_added":null,"published":"2022-04-12"},{"cvss_score":9.6,"headline":"ghost vulnerable to unauthorized newsletter modification via improper access controls","id":"CVE-2022-41654","kev_date_added":null,"published":"2022-12-23"},{"cvss_score":9.4,"headline":"Ghost has a SQL Injection in its Content API","id":"CVE-2026-26980","kev_date_added":null,"published":"2026-02-20"},{"cvss_score":9.1,"headline":"Security feature bypass in n/a","id":"CVE-2024-34451","kev_date_added":null,"published":"2024-06-16"},{"cvss_score":9,"headline":"Ghost has possible Cross-site Scripting issue","id":"CVE-2024-23724","kev_date_added":null,"published":"2024-02-11"},{"cvss_score":9,"headline":"Cross-site scripting in Ghost","id":"CVE-2022-47194","kev_date_added":null,"published":"2023-01-19"}],"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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["TryGhost"]},"summary":"Attackers can hijack Ghost Admin sessions via DOM XSS in an unused preview endpoint, requiring users to click a malicious link.","url":"https://insights.sbomify.com/CVE-2021-29484/"}