{"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-2026-40281 exists.","fix":"Upgrade github.com/gotenberg/gotenberg/v8 to 8.31.0 or later.","what":"CVE-2026-40281 is a critical command injection vulnerability in gotenberg, published on 6 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-2026-40281 and fix it if it is affected.\n\nWhat it is: CVE-2026-40281 is a critical command injection vulnerability in gotenberg, published on 6 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-2026-40281 exists.\n\nAffected packages and fixed versions:\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.31.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.31.0\n- github.com/gotenberg/gotenberg/v8 (Go): affected all versions; fixed in 8.31.0\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-2026-40281/ (Markdown: https://insights.sbomify.com/CVE-2026-40281/index.md)","id":"CVE-2026-40281","markdown":"https://insights.sbomify.com/CVE-2026-40281/index.md","name":"CVE-2026-40281","record":{"aliases":["GHSA-q7r4-hc83-hf2q","GO-2026-5572"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_modify","code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"PDF conversion API","requires_auth":"none","summary":"An unauthenticated attacker can inject arguments into ExifTool via newlines in metadata values, allowing arbitrary file manipulation or code execution within the container.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"gotenberg","vendor":"thecodingmachine"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-88","name":"Improper Neutralization of Argument Delimiters in a Command"}],"description":"Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint validates metadata keys for control characters but leaves metadata values unsanitized. A newline character in a metadata value splits the ExifTool stdin line into two separate arguments, allowing injection of arbitrary ExifTool pseudo-tags such as -FileName, -Directory, -SymLink, and -HardLink. This is a bypass of the incomplete key-sanitization fix introduced in v8.30.1. An unauthenticated attacker can rename or move any PDF being processed to an arbitrary path in the container filesystem, overwrite arbitrary files, or create symlinks and hard links at arbitrary paths.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":"2026-10-01","github_poc":3,"max_poc_stars":4,"metasploit":0,"nuclei":1,"refs":[{"date":"2026-10-02T14:20:27Z","kind":"github_poc","ref":"https://github.com/MRdark-ops/CVE-2026-40281-exploit","stars":4,"title":"Gotenberg 8.30.1 unauthenticated RCE exploit"},{"date":"2026-10-01T22:22:17Z","kind":"github_poc","ref":"https://github.com/0xgh057r3c0n/CVE-2026-40281","stars":0,"title":"Gotenberg \u003c= 8.30.1 unauthenticated RCE"},{"date":"2026-10-05T00:34:41Z","kind":"github_poc","ref":"https://github.com/rabakuku/CVE-2026-40281","stars":0,"title":"A Working PoC For CVE-2026-40281"},{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-40281.yaml","stars":null,"title":"Gotenberg \u003c= 8.30.1 - Remote Code Execution"}],"tier":"weaponised"},"has_fix":true,"headline":"Gotenberg vulnerable to argument injection via newlines in ExifTool metadata values","id":"CVE-2026-40281","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":4,"n_references":2,"next":{"headline":"WeGIA has stored XSS in intercorrencia_visualizar.php","id":"CVE-2026-40282"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v7","purl":"pkg:golang/github.com/gotenberg/gotenberg/v7","source":"GO-2026-5572"},{"ecosystem":"Go","fixed":["8.31.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":null,"source":"GHSA-q7r4-hc83-hf2q"},{"ecosystem":"Go","fixed":["8.31.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GHSA-q7r4-hc83-hf2q"},{"ecosystem":"Go","fixed":["8.31.0"],"introduced":["0"],"last_affected":[],"package":"github.com/gotenberg/gotenberg/v8","purl":"pkg:golang/github.com/gotenberg/gotenberg/v8","source":"GO-2026-5572"}],"prev":{"headline":"Gotenberg SSRF via case-insensitive URL scheme bypass in webhook and downloadFrom deny-lists","id":"CVE-2026-40280"},"products":["gotenberg"],"published":"2026-05-06","related":[{"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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-07","vendors":["gotenberg"]},"summary":"An unauthenticated attacker can inject arguments into ExifTool via newlines in metadata values, allowing arbitrary file manipulation or code execution within the container.","url":"https://insights.sbomify.com/CVE-2026-40281/"}