{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-77989 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-77989 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-77989 is a medium-severity cross-site scripting vulnerability in joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla, published on 27 Aug 2026. 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-2026-77989 and fix it if it is affected.\n\nWhat it is: CVE-2026-77989 is a medium-severity cross-site scripting vulnerability in joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla, published on 27 Aug 2026. 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-2026-77989 in the wild and no public exploit code.\n\nAffected product: joomlaeventmanager.net JEM - Joomla Event Manager extension for Joomla. 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-2026-77989/ (Markdown: https://insights.sbomify.com/CVE-2026-77989/index.md)","id":"CVE-2026-77989","markdown":"https://insights.sbomify.com/CVE-2026-77989/index.md","name":"CVE-2026-77989","record":{"aliases":["GHSA-x373-x8fh-6pfh"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Joomla Events Manager","requires_auth":"none","summary":"Reflected XSS in Joomla Events Manager allows attackers to execute arbitrary scripts via the PDF export link.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Joomla","cpe":[],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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":"Joomla Extension - joomlaeventmanager.net - Reflected XSS via the PDF export link in Joomla Events Manager \u003c 5.0.1 - buildCurrentPdfLink copies the current request query string into the PDF button URL, and pdfbutton() echoes it unescaped, leading to an reflected XSS vector.","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":"Joomla Extension - joomlaeventmanager.net - Reflected XSS via the PDF export link in Joomla Events Manager \u003c 5.0.1","id":"CVE-2026-77989","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Missing authorization in JEM - Joomla Event Manager extension for Joomla","id":"CVE-2026-77990"},"packages":[],"prev":{"headline":"TRENDnet TEW-823DRU CLI Configuration Tool nvram_get command injection","id":"CVE-2026-77988"},"products":["JEM - Joomla Event Manager extension for Joomla"],"published":"2026-08-27","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-08-28","vendors":["joomlaeventmanager.net"]},"summary":"Reflected XSS in Joomla Events Manager allows attackers to execute arbitrary scripts via the PDF export link.","url":"https://insights.sbomify.com/CVE-2026-77989/"}