{"apiVersion":"1.0","identifier":"CVE-2026-53541","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.","publishedAt":"2026-08-21T23:16:26","lastModifiedAt":"2026-08-24T20:16:48","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-53541","cvssScore":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","epssProbability":0.00228,"riskScore":0.44,"affectedProduct":"OliveTin","affectedVersions":"unknown","vulnerabilityType":"Web app","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-53541","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-53541","en":"https://www.redsauce.net/en/cves/CVE-2026-53541","fr":"https://www.redsauce.net/fr/cves/CVE-2026-53541","pt":"https://www.redsauce.net/pt/cves/CVE-2026-53541","de":"https://www.redsauce.net/de/cves/CVE-2026-53541","sk":"https://www.redsauce.net/sk/cves/CVE-2026-53541","el":"https://www.redsauce.net/el/cves/CVE-2026-53541"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-53541"}}