{"answers":{"affected":"4 open source packages ship an affected version, including github.com/concourse/concourse and concourse.","exploited":"There is no known exploitation of CVE-2026-49826 in the wild and no public exploit code.","fix":"Upgrade github.com/concourse/concourse to 1.6.1-0.20260526150512-ac60be5f0435 or later.","what":"CVE-2026-49826 is a vulnerability in concourse, published on 14 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-2026-49826 and fix it if it is affected.\n\nWhat it is: CVE-2026-49826 is a vulnerability in concourse, published on 14 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: There is no known exploitation of CVE-2026-49826 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/concourse/concourse (Go): affected all versions; fixed in 1.6.1-0.20260526150512-ac60be5f0435\n- github.com/concourse/concourse (Go): affected all versions; fixed in 1.6.1-0.20260526150512-ac60be5f0435\n- github.com/concourse/concourse (Go): affected all versions; fixed in 1.6.1-0.20260526150512-ac60be5f0435\n- concourse (Bitnami): affected all versions; fixed in 8.2.3\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-2026-49826/ (Markdown: https://insights.sbomify.com/CVE-2026-49826/index.md)","id":"CVE-2026-49826","markdown":"https://insights.sbomify.com/CVE-2026-49826/index.md","name":"CVE-2026-49826","record":{"aliases":["BIT-concourse-2026-49826","GHSA-8w27-c4vc-88q9","GO-2026-5866"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Concourse automation system","requires_auth":"none","summary":"Attackers can craft URLs to redirect users from Concourse to malicious sites, facilitating phishing attacks to steal credentials.","user_interaction":"required","vuln_class":"open_redirect"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":0,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-601","name":"URL Redirection to Untrusted Site"}],"description":"Concourse is a container-based automation system written in Go. Prior to version 8.2.3, an attacker is able to craft and send a user a URL that will redirect the user from the Concourse web server to any other site. This could be used in a phishing attack to steal user's credentials. This has been fixed in 8.2.3. No known workarounds are available.","ecosystems":["Bitnami","Go"],"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":"Concourse login flow has an open redirect issue","id":"CVE-2026-49826","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":null,"products":[],"type":"open_redirect","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"WebErpMesv2 has Unauthenticated RCE via Unrestricted File Upload in HR Expense scan_file (CWE-434)","id":"CVE-2026-49827"},"packages":[{"ecosystem":"Bitnami","fixed":["8.2.3"],"introduced":["0"],"last_affected":[],"package":"concourse","purl":"pkg:bitnami/concourse","source":"BIT-concourse-2026-49826"},{"ecosystem":"Go","fixed":["1.6.1-0.20260526150512-ac60be5f0435"],"introduced":["0"],"last_affected":[],"package":"github.com/concourse/concourse","purl":null,"source":"GHSA-8w27-c4vc-88q9"},{"ecosystem":"Go","fixed":["1.6.1-0.20260526150512-ac60be5f0435"],"introduced":["0"],"last_affected":[],"package":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","source":"GHSA-8w27-c4vc-88q9"},{"ecosystem":"Go","fixed":["1.6.1-0.20260526150512-ac60be5f0435"],"introduced":["0"],"last_affected":[],"package":"github.com/concourse/concourse","purl":"pkg:golang/github.com/concourse/concourse","source":"GO-2026-5866"}],"prev":{"headline":"lxml: javascript: URL bypass in Cleaner via xlink:href","id":"CVE-2026-49825"},"products":["concourse"],"published":"2026-08-14","related":[],"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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"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":"2026-08-14","vendors":["concourse"]},"summary":"Attackers can craft URLs to redirect users from Concourse to malicious sites, facilitating phishing attacks to steal credentials.","url":"https://insights.sbomify.com/CVE-2026-49826/"}