{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-53978 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-53978 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-53978 is a medium-severity cross-site scripting vulnerability in Mybb Mybb, published on 22 Dec 2025. 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-2023-53978 and fix it if it is affected.\n\nWhat it is: CVE-2023-53978 is a medium-severity cross-site scripting vulnerability in Mybb Mybb, published on 22 Dec 2025. 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-2023-53978 in the wild and no public exploit code.\n\nAffected product: Mybb Mybb. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2023-53978/ (Markdown: https://insights.sbomify.com/CVE-2023-53978/index.md)","id":"CVE-2023-53978","markdown":"https://insights.sbomify.com/CVE-2023-53978/index.md","name":"CVE-2023-53978","record":{"aliases":["GHSA-4hv2-45c6-qhf8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"myBB Forums","requires_auth":"low_privilege","summary":"Authenticated administrators can inject malicious scripts into forum announcements, leading to arbitrary JavaScript execution for other users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[{"product":"mybb","vendor":"mybb"}],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"myBB Forums 1.8.26 contains a stored cross-site scripting vulnerability in the forum announcement system that allows authenticated administrators to inject malicious scripts when creating announcements. Attackers can exploit this vulnerability by inserting script payloads in the announcement title field when adding announcements through the 'Forums and Posts' \u003e 'Forum Announcements' interface, causing arbitrary JavaScript to execute when the announcement is displayed on the forum.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Announcements","id":"CVE-2023-53978","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"mybb:mybb","products":["mybb:mybb"],"type":"xss","year":"2023"},"n_packages":0,"n_references":3,"next":{"headline":"MyBB 1.8.32 Authenticated Remote Code Execution via Chained Vulnerabilities","id":"CVE-2023-53979"},"packages":[],"prev":{"headline":"myBB Forums 1.8.26 Stored Cross-Site Scripting via Forum Management","id":"CVE-2023-53977"},"products":["myBB forums"],"published":"2025-12-22","related":[{"cvss_score":10,"headline":"myBB 1.6.4 Backdoor Arbitrary Command Execution","id":"CVE-2011-10018","kev_date_added":null,"published":"2025-08-13"},{"cvss_score":10,"headline":"Information disclosure in n/a","id":"CVE-2015-2786","kev_date_added":null,"published":"2015-03-29"},{"cvss_score":10,"headline":"Cross-site scripting in n/a","id":"CVE-2011-5133","kev_date_added":null,"published":"2012-08-30"},{"cvss_score":10,"headline":"SQL injection in n/a","id":"CVE-2006-0218","kev_date_added":null,"published":"2006-01-16"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2020-22612","kev_date_added":null,"published":"2023-09-01"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2017-16780","kev_date_added":null,"published":"2017-11-10"},{"cvss_score":8.8,"headline":"SQL injection in n/a","id":"CVE-2021-27890","kev_date_added":null,"published":"2021-03-15"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-04-07","vendors":["Mybb"]},"summary":"Authenticated administrators can inject malicious scripts into forum announcements, leading to arbitrary JavaScript execution for other users.","url":"https://insights.sbomify.com/CVE-2023-53978/"}