{"answers":{"affected":"1 open source package ship an affected version, including discourse. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-26040 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-26040 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-26040 is a medium-severity cross-site scripting vulnerability in Discourse Discourse, published on 17 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-26040 and fix it if it is affected.\n\nWhat it is: CVE-2023-26040 is a medium-severity cross-site scripting vulnerability in Discourse Discourse, published on 17 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-26040 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- discourse (Bitnami): affected from 3.1.0-beta2 up to 3.1.0-beta2; no fix listed\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-2023-26040/ (Markdown: https://insights.sbomify.com/CVE-2023-26040/index.md)","id":"CVE-2023-26040","markdown":"https://insights.sbomify.com/CVE-2023-26040/index.md","name":"CVE-2023-26040","record":{"aliases":["BIT-discourse-2023-26040","GHSA-ccfc-qpmp-gq87"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Discourse forum platform","requires_auth":"none","summary":"Attackers can execute arbitrary scripts in victim browsers by sending malicious chat messages, potentially leading to session hijacking or data theft.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"discourse","vendor":"discourse"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Discourse is an open-source discussion platform. Between versions 3.1.0.beta2 and 3.1.0.beta3 of the `tests-passed` branch, editing or responding to a chat message containing malicious content could lead to a cross-site scripting attack. This issue is patched in version 3.1.0.beta3 of the `tests-passed` branch. There are no known workarounds.","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":false,"headline":"Discourse chat messages susceptible to Cross-site Scripting through chat excerpts","id":"CVE-2023-26040","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"discourse:discourse","products":["discourse:discourse"],"type":"xss","year":"2023"},"n_packages":1,"n_references":2,"next":{"headline":"Nextcloud Talk messages can still be seen on conversation after expiring when cron is misconfigured","id":"CVE-2023-26041"},"packages":[{"ecosystem":"Bitnami","fixed":[],"introduced":["3.1.0-beta2"],"last_affected":["3.1.0-beta2"],"package":"discourse","purl":"pkg:bitnami/discourse","source":"BIT-discourse-2023-26040"}],"prev":{"headline":"ZoneMinder vulnerable to OS Command injection in daemonControl() API","id":"CVE-2023-26039"},"products":["discourse"],"published":"2023-03-17","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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-25","vendors":["discourse"]},"summary":"Attackers can execute arbitrary scripts in victim browsers by sending malicious chat messages, potentially leading to session hijacking or data theft.","url":"https://insights.sbomify.com/CVE-2023-26040/"}