{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81421 exists.","fix":"No fix has been published for CVE-2026-81421 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-81421 is a medium-severity server-side request forgery vulnerability in ddfourtwo sentry-selfhosted-mcp, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-81421 and fix it if it is affected.\n\nWhat it is: CVE-2026-81421 is a medium-severity server-side request forgery vulnerability in ddfourtwo sentry-selfhosted-mcp, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-81421 exists.\n\nAffected product: ddfourtwo sentry-selfhosted-mcp. 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-2026-81421/ (Markdown: https://insights.sbomify.com/CVE-2026-81421/index.md)","id":"CVE-2026-81421","markdown":"https://insights.sbomify.com/CVE-2026-81421/index.md","name":"CVE-2026-81421","record":{"aliases":["GHSA-77f3-qj56-x322"],"analysis":{"component_type":"developer_tool","fix_type":"no_fix_stated","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Sentry MCP server","requires_auth":"none","summary":"Attackers can exploit a server-side request forgery vulnerability in the Sentry MCP server to access internal resources or bypass security controls.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"A security flaw has been discovered in ddfourtwo sentry-selfhosted-mcp 0.4.0. The affected element is an unknown function of the component raw_sentry_api. The manipulation of the argument endpoint results in server-side request forgery. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"ddfourtwo sentry-selfhosted-mcp raw_sentry_api server-side request forgery","id":"CVE-2026-81421","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Accept Stripe Payments \u003c 2.1.4 - Open Redirect via IPN Handler","id":"CVE-2026-81423"},"packages":[],"prev":{"headline":"Tcard WP \u003c= 1.8.0 - Unauthenticated SQLi via group_id Parameter","id":"CVE-2026-81420"},"products":["sentry-selfhosted-mcp"],"published":"2026-08-26","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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-27","vendors":["ddfourtwo"]},"summary":"Attackers can exploit a server-side request forgery vulnerability in the Sentry MCP server to access internal resources or bypass security controls.","url":"https://insights.sbomify.com/CVE-2026-81421/"}