{"answers":{"affected":"1 open source package ship an affected version, including discourse. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-53962 in the wild and no public exploit code.","fix":"Upgrade discourse to a fixed version for your release line: 2026.1.5, 2026.4.2 or 2026.5.1.","what":"CVE-2026-53962 is a medium-severity cross-site scripting vulnerability in Discourse Discourse, published on 9 Jul 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-2026-53962 and fix it if it is affected.\n\nWhat it is: CVE-2026-53962 is a medium-severity cross-site scripting vulnerability in Discourse Discourse, published on 9 Jul 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-2026-53962 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- discourse (Bitnami): affected from 2026.1.0; fixed in 2026.1.5, 2026.4.2, 2026.5.1\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-2026-53962/ (Markdown: https://insights.sbomify.com/CVE-2026-53962/index.md)","id":"CVE-2026-53962","markdown":"https://insights.sbomify.com/CVE-2026-53962/index.md","name":"CVE-2026-53962","record":{"aliases":["BIT-discourse-2026-53962","GHSA-jmcf-3367-78vv"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Discourse forum platform","requires_auth":"low_privilege","summary":"Insufficient SVG sanitization in Discourse allows attackers to execute cross-site scripting via crafted uploads or avatars.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"discourse","vendor":"discourse"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, insufficient SVG sanitization in upload and user avatar handling could lead to cross-site scripting when a user visited specific URLs that are not normally part of community browsing. This issue is fixed in versions 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.","ecosystems":["Bitnami"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Discourse: Insufficient SVG sanitization logic","id":"CVE-2026-53962","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"discourse:discourse","products":["discourse:discourse"],"type":"xss","year":"2026"},"n_packages":1,"n_references":9,"next":{"headline":"Discourse: Stored-XSS in 2FA delete confirmation modal","id":"CVE-2026-53963"},"packages":[{"ecosystem":"Bitnami","fixed":["2026.1.5","2026.4.2","2026.5.1"],"introduced":["2026.1.0","2026.4.0","2026.5.0"],"last_affected":[],"package":"discourse","purl":"pkg:bitnami/discourse","source":"BIT-discourse-2026-53962"}],"prev":{"headline":"Discourse: Forged AWS SNS bounce notifications can disable a targeted user's email (missing TopicArn binding)","id":"CVE-2026-53961"},"products":["discourse"],"published":"2026-07-09","related":[{"cvss_score":10,"headline":"RCE via malicious SNS subscription payload","id":"CVE-2021-41163","kev_date_added":null,"published":"2021-10-20"},{"cvss_score":9.1,"headline":"Discourse vulnerable to RCE via admins uploading maliciously zipped file","id":"CVE-2022-36066","kev_date_added":null,"published":"2022-09-29"},{"cvss_score":8.9,"headline":"Discourse user account takeover via email and invite link","id":"CVE-2022-39356","kev_date_added":null,"published":"2022-11-02"},{"cvss_score":8.8,"headline":"Discourse vulnerable to Cross-site Scripting in local oneboxes","id":"CVE-2023-22468","kev_date_added":null,"published":"2023-01-26"},{"cvss_score":8.7,"headline":"Discourse leaks private topic title and post excerpt via user action API endpoint","id":"CVE-2026-27934","kev_date_added":null,"published":"2026-03-19"},{"cvss_score":8.7,"headline":"Discourse vulnerable to DoS via large URL payload in PM to a bot","id":"CVE-2025-48053","kev_date_added":null,"published":"2025-06-09"},{"cvss_score":8.6,"headline":"Discourse vulnerable to unlimited mentioned users in message serializer","id":"CVE-2023-48297","kev_date_added":null,"published":"2024-01-12"}],"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":"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":"2026-07-10","vendors":["discourse"]},"summary":"Insufficient SVG sanitization in Discourse allows attackers to execute cross-site scripting via crafted uploads or avatars.","url":"https://insights.sbomify.com/CVE-2026-53962/"}