{"answers":{"affected":"4 open source packages ship an affected version, including github.com/gotenberg/gotenberg/v8 and github.com/gotenberg/gotenberg/v7. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-42596 exists.","fix":"Upgrade github.com/gotenberg/gotenberg/v8 to 8.32.0 or later.","what":"CVE-2026-42596 is a critical server-side request forgery vulnerability in gotenberg, published on 14 May 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-2026-42596 and fix it if it is affected.\n\nWhat it is: CVE-2026-42596 is a critical server-side request forgery vulnerability in gotenberg, published on 14 May 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-2026-42596 exists.\n\nAffected packages and fixed versions:\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.32.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.32.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.32.0\n- github.com/gotenberg/gotenberg/v7 (Go): affected all versions; 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-2026-42596/ (Markdown: https://insights.sbomify.com/CVE-2026-42596/index.md)","id":"CVE-2026-42596","markdown":"https://insights.sbomify.com/CVE-2026-42596/index.md","name":"CVE-2026-42596","record":{"aliases":["GHSA-4vmc-gm8v-m35h","GO-2026-5132"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"PDF generation API","requires_auth":"none","summary":"An unauthenticated attacker can bypass default deny-lists to force the server to make requests to internal services, exposing private data.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"gotenberg","vendor":"thecodingmachine"}],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"}],"description":"Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, the default deny-lists used by Gotenberg's downloadFrom feature and webhook feature are bypassable. Because the filter is regex-based and case-sensitive, an unauthenticated attacker can supply URLs such as http://[::ffff:127.0.0.1]:... and reach loopback or private HTTP services that the default deny-list is intended to block. This crosses a real security boundary because an external caller can force the server to make outbound requests to internal-only targets. This vulnerability is fixed in 8.31.0.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-42596.yaml","stars":null,"title":"Gotenberg \u003c 8.31.0 - Server-Side Request Forgery"}],"tier":"weaponised"},"has_fix":true,"headline":"Gotenberg: Unauthenticated SSRF via default deny-list bypass in downloadFrom and webhook","id":"CVE-2026-42596","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Gotenberg: Chromium URL conversion routes read arbitrary files under /tmp via file:// scheme","id":"CVE-2026-42597"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v7","purl":"pkg:golang/github.com/gotenberg/gotenberg/v7","source":"GO-2026-5132"},{"ecosystem":"Go","fixed":["8.32.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":null,"source":"GHSA-4vmc-gm8v-m35h"},{"ecosystem":"Go","fixed":["8.32.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GHSA-4vmc-gm8v-m35h"},{"ecosystem":"Go","fixed":["8.32.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GO-2026-5132"}],"prev":{"headline":"Gotenberg: Server-Side Request Forgery via Chromium URL Endpoint with Redirect-Based Deny-List Bypass","id":"CVE-2026-42595"},"products":["gotenberg"],"published":"2026-05-14","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":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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-15","vendors":["gotenberg"]},"summary":"An unauthenticated attacker can bypass default deny-lists to force the server to make requests to internal services, exposing private data.","url":"https://insights.sbomify.com/CVE-2026-42596/"}