{"answers":{"affected":"6 open source packages ship an affected version, including github.com/gotenberg/gotenberg/v7 and github.com/gotenberg/gotenberg/v8. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27018 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-27018 is a high-severity server-side request forgery vulnerability in gotenberg, published on 30 Mar 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-2026-27018 and fix it if it is affected.\n\nWhat it is: CVE-2026-27018 is a high-severity server-side request forgery vulnerability in gotenberg, published on 30 Mar 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-2026-27018 exists.\n\nAffected packages and fixed versions:\n- github.com/gotenberg/gotenberg/v7 (Go): affected all versions; no fix listed\n- github.com/gotenberg/gotenberg/v7 (Go): affected all versions up to 7.10.2; no fix listed\n- github.com/gotenberg/gotenberg/v7 (Go): affected all versions up to 7.10.2; no fix listed\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.29.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.29.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.29.0\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-2026-27018/ (Markdown: https://insights.sbomify.com/CVE-2026-27018/index.md)","id":"CVE-2026-27018","markdown":"https://insights.sbomify.com/CVE-2026-27018/index.md","name":"CVE-2026-27018","record":{"aliases":["GHSA-jjwv-57xh-xr6r","GO-2026-4905"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Document conversion API","requires_auth":"none","summary":"Attackers can bypass Chromium deny-lists using mixed-case URL schemes to access restricted resources in Gotenberg document conversion services.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"gotenberg","vendor":"thecodingmachine"}],"cvss":{"score":7.8,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Gotenberg is an API for converting document formats. Prior to version 8.29.0, the fix introduced for CVE-2024-21527 can be bypassed using mixed-case or uppercase URL schemes. This issue has been patched in version 8.29.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Gotenberg: Chromium deny-list bypass via case-insensitive URL scheme","id":"CVE-2026-27018","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":6,"n_references":4,"next":{"headline":"Photobooth has a XSS vulnerability in user input","id":"CVE-2026-27020"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v7","purl":"pkg:golang/github.com/gotenberg/gotenberg/v7","source":"GO-2026-4905"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["7.10.2"],"package":"github.com/gotenberg/gotenberg/v7","purl":null,"source":"GHSA-jjwv-57xh-xr6r"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["7.10.2"],"package":"github.com/gotenberg/gotenberg/v7","purl":"pkg:golang/github.com/gotenberg/gotenberg/v7","source":"GHSA-jjwv-57xh-xr6r"},{"ecosystem":"Go","fixed":["8.29.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":null,"source":"GHSA-jjwv-57xh-xr6r"},{"ecosystem":"Go","fixed":["8.29.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GHSA-jjwv-57xh-xr6r"},{"ecosystem":"Go","fixed":["8.29.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GO-2026-4905"}],"prev":{"headline":"uTLS has a Chrome Parrot Fingerprint Vulnerability due to GREASE ECH Cipher Suite Mismatch","id":"CVE-2026-27017"},"products":["gotenberg"],"published":"2026-03-30","related":[{"cvss_score":10,"headline":"Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values","id":"CVE-2026-40281","kev_date_added":null,"published":"2026-05-06"},{"cvss_score":9.8,"headline":"Gotenberg: Unauthenticated RCE via ExifTool Metadata Key Injection","id":"CVE-2026-42589","kev_date_added":null,"published":"2026-05-14"},{"cvss_score":9.8,"headline":"Path traversal in n/a","id":"CVE-2020-13450","kev_date_added":null,"published":"2021-01-07"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2020-13451","kev_date_added":null,"published":"2021-01-07"},{"cvss_score":9.8,"headline":"Privilege escalation in n/a","id":"CVE-2020-13452","kev_date_added":null,"published":"2021-01-07"},{"cvss_score":9.4,"headline":"Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook","id":"CVE-2026-42596","kev_date_added":null,"published":"2026-05-14"},{"cvss_score":8.7,"headline":"Gotenberg has a ReDoS via extraHttpHeaders scope feature","id":"CVE-2026-35458","kev_date_added":null,"published":"2026-04-07"}],"sources":[{"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":"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-31","vendors":["gotenberg"]},"summary":"Attackers can bypass Chromium deny-lists using mixed-case URL schemes to access restricted resources in Gotenberg document conversion services.","url":"https://insights.sbomify.com/CVE-2026-27018/"}