{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-41921 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-41921 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-41921 is a medium-severity cross-site scripting vulnerability in Koha, published on 18 Aug 2026. 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-2026-41921 and fix it if it is affected.\n\nWhat it is: CVE-2026-41921 is a medium-severity cross-site scripting vulnerability in Koha, published on 18 Aug 2026. 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-2026-41921 in the wild and no public exploit code.\n\nAffected product: Koha. 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-2026-41921/ (Markdown: https://insights.sbomify.com/CVE-2026-41921/index.md)","id":"CVE-2026-41921","markdown":"https://insights.sbomify.com/CVE-2026-41921/index.md","name":"CVE-2026-41921","record":{"aliases":["GHSA-w5c5-88rv-x3v2"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Koha ILS","requires_auth":"low_privilege","summary":"Authenticated staff users can inject malicious scripts via purchase suggestions, leading to script execution in other staff browsers.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/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":"Koha before 26.05.02, 25.11.07, and 25.05.13 contains a stored cross-site scripting vulnerability in the purchase suggestion handler that allows authenticated staff users to inject malicious scripts by submitting unsanitized input through the suggestion save operation. Attackers can supply crafted HTML or script content in fields such as title, author, isbn, publishercode, place, collectiontitle, itemtype, and note, which are stored without sanitization and later rendered in the suggestion list template, causing injected scripts to execute in the browser of any staff user who views the suggestions.","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":"Koha Stored XSS via Purchase Suggestion Handler","id":"CVE-2026-41921","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":4,"next":{"headline":"WDR201A WiFi Extender OS Command Injection via wireless.cgi","id":"CVE-2026-41922"},"packages":[],"prev":{"headline":"Apache Traffic Server: SNI to Host header matching policy is not properly enforced","id":"CVE-2026-41920"},"products":["Koha"],"published":"2026-08-18","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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-01","vendors":["Koha Community"]},"summary":"Authenticated staff users can inject malicious scripts via purchase suggestions, leading to script execution in other staff browsers.","url":"https://insights.sbomify.com/CVE-2026-41921/"}