{"id":"CVE-2026-28505","state":"PUBLISHED","title":"Tautulli: RCE via eval() sandbox bypass using lambda nested scope to escape co_names whitelist check","description":"Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the str_eval() function in notification_handler.py implements a sandboxed eval() for notification text templates. The sandbox attempts to restrict callable names by inspecting code.co_names of the compiled code object. However, co_names only contains names from the outer code object. When a lambda expression is used, it creates a nested code object whose attribute accesses are stored in code.co_consts, NOT in code.co_names. The sandbox never inspects nested code objects. This issue has been patched in version 2.17.0.","publishedAt":"2026-03-30T19:41:54.644Z","updatedAt":"2026-03-30T20:13:28.905Z","severity":{"score":7.5,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Tautulli Tautulli"],"affected":[{"vendor":"Tautulli","product":"Tautulli","versions":[{"version":"< 2.17.0","status":"affected"}]}],"references":["https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m","https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0"],"weaknesses":["CWE-94","CWE-95"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/28xxx/CVE-2026-28505.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28505","state":"PUBLISHED","datePublished":"2026-03-30T19:41:54.644Z","dateUpdated":"2026-03-30T20:13:28.905Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-27T20:57:47.709Z"},"containers":{"cna":{"title":"Tautulli: RCE via eval() sandbox bypass using lambda nested scope to escape co_names whitelist check","descriptions":[{"lang":"en","value":"Tautulli is a Python based monitoring and tracking tool for Plex Media Server. Prior to version 2.17.0, the str_eval() function in notification_handler.py implements a sandboxed eval() for notification text templates. The sandbox attempts to restrict callable names by inspecting code.co_names of the compiled code object. However, co_names only contains names from the outer code object. When a lambda expression is used, it creates a nested code object whose attribute accesses are stored in code.co_consts, NOT in code.co_names. The sandbox never inspects nested code objects. This issue has been patched in version 2.17.0."}],"affected":[{"vendor":"Tautulli","product":"Tautulli","versions":[{"version":"< 2.17.0","status":"affected"}]}],"references":[{"url":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m","name":"https://github.com/Tautulli/Tautulli/security/advisories/GHSA-m62j-gwm9-7p8m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0","name":"https://github.com/Tautulli/Tautulli/releases/tag/v2.17.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"HIGH","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-95","lang":"en","description":"CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-30T19:41:54.644Z"},"source":{"advisory":"GHSA-m62j-gwm9-7p8m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-30T20:13:17.349793Z","id":"CVE-2026-28505","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-30T20:13:28.905Z"}}]}}}