{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73628 exists.","fix":"No fix has been published for CVE-2026-73628 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-73628 is a medium-severity cross-site scripting vulnerability in s9y Serendipity, published on 13 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-2026-73628 and fix it if it is affected.\n\nWhat it is: CVE-2026-73628 is a medium-severity cross-site scripting vulnerability in s9y Serendipity, published on 13 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73628 exists.\n\nAffected product: s9y Serendipity. 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-2026-73628/ (Markdown: https://insights.sbomify.com/CVE-2026-73628/index.md)","id":"CVE-2026-73628","markdown":"https://insights.sbomify.com/CVE-2026-73628/index.md","name":"CVE-2026-73628","record":{"aliases":["GHSA-4g8w-wg6x-gvqc","GHSA-6c2x-mjmq-vx4q"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Serendipity blog software","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in victims' browsers via crafted search links due to improper sanitization order in Serendipity.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","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:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Serendipity versions \u003e= 2.3.5 and \u003c= 2.6.0 contain a reflected cross-site scripting vulnerability in the search clean-URL route (/search/\u003cterm\u003e). In include/functions_routing.inc.php serveSearch(), the sanitisation pipeline runs urldecode() after HTML-encoding, so a single URL-encoded HTML payload survives strip_tags() and htmlspecialchars() and is then decoded back into live HTML in the page. A crafted search link can execute arbitrary JavaScript in the victim's browser. Fixed in 2.6.1.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Serendipity 2.3.5 Reflected XSS via search clean-URL route","id":"CVE-2026-73628","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Serendipity before 2.6.0 SSRF via hex IPv4 and IPv6 addresses","id":"CVE-2026-73629"},"packages":[],"prev":{"headline":"JupyterLab 4.6.0 Plugin Manager Lock-Rule Enforcement Bypass","id":"CVE-2026-73627"},"products":["Serendipity"],"published":"2026-08-13","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-30","vendors":["s9y"]},"summary":"Attackers can execute arbitrary JavaScript in victims' browsers via crafted search links due to improper sanitization order in Serendipity.","url":"https://insights.sbomify.com/CVE-2026-73628/"}