{"answers":{"affected":"3 open source packages ship an affected version, including github.com/OliveTin/OliveTin.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53541 exists.","fix":"Upgrade github.com/OliveTin/OliveTin to 0.0.0-20260531214440-ebffd9f040f7 or later.","what":"CVE-2026-53541 is a medium-severity command injection vulnerability in OliveTin, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-53541 and fix it if it is affected.\n\nWhat it is: CVE-2026-53541 is a medium-severity command injection vulnerability in OliveTin, published on 21 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-53541 exists.\n\nAffected packages and fixed versions:\n- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260531214440-ebffd9f040f7\n- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260531214440-ebffd9f040f7\n- github.com/OliveTin/OliveTin (Go): affected all versions; fixed in 0.0.0-20260531214440-ebffd9f040f7\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-2026-53541/ (Markdown: https://insights.sbomify.com/CVE-2026-53541/index.md)","id":"CVE-2026-53541","markdown":"https://insights.sbomify.com/CVE-2026-53541/index.md","name":"CVE-2026-53541","record":{"aliases":["GHSA-prj9-97mp-mwh2","GO-2026-5552"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OliveTin web interface","requires_auth":"low_privilege","summary":"Attackers can inject arbitrary shell commands via unvalidated ot_-prefixed arguments in OliveTin, leading to remote code execution.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"OliveTin gives access to predefined shell commands from a web interface. The `filterToDefinedArgumentsOnly` function in the executor is intended to discard any arguments not explicitly defined in the action's configuration. However, prior to commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d, a special case allows any argument whose name starts with `ot_` to bypass this filter. While two system arguments (`ot_executionTrackingId` and `ot_username`) are injected by OliveTin and overridden, all other `ot_`-prefixed arguments supplied by the user pass through unmodified. These bypassed arguments are not type-checked — the validation loop only iterates over the action's defined arguments, so `ot_`-prefixed arguments skip all type safety checks entirely; set as environment variables — via `buildEnv()`, with completely unvalidated values, and passed to the executed command; and included in the template context — available as `.Arguments.ot_*` in template rendering. Commit ebffd9f040f791208aee1db2e5a8aecd1e3e603d contains a patch.","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":"OliveTin has Unvalidated `ot_`-prefixed Arguments that Bypass Input Filtering","id":"CVE-2026-53541","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Termix: Tar option injection in file-manager archive creation allows command execution on managed SSH hosts","id":"CVE-2026-53542"},"packages":[{"ecosystem":"Go","fixed":["0.0.0-20260531214440-ebffd9f040f7"],"introduced":["0"],"last_affected":[],"package":"github.com/OliveTin/OliveTin","purl":null,"source":"GHSA-prj9-97mp-mwh2"},{"ecosystem":"Go","fixed":["0.0.0-20260531214440-ebffd9f040f7"],"introduced":["0"],"last_affected":[],"package":"github.com/OliveTin/OliveTin","purl":"pkg:golang/github.com/OliveTin/OliveTin","source":"GHSA-prj9-97mp-mwh2"},{"ecosystem":"Go","fixed":["0.0.0-20260531214440-ebffd9f040f7"],"introduced":["0"],"last_affected":[],"package":"github.com/OliveTin/OliveTin","purl":"pkg:golang/github.com/OliveTin/OliveTin","source":"GO-2026-5552"}],"prev":{"headline":"Python-Multipart: Negative Content-Length in parse_form buffers the entire body in memory","id":"CVE-2026-53540"},"products":["OliveTin"],"published":"2026-08-21","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-24","vendors":["OliveTin"]},"summary":"Attackers can inject arbitrary shell commands via unvalidated ot_-prefixed arguments in OliveTin, leading to remote code execution.","url":"https://insights.sbomify.com/CVE-2026-53541/"}