{"id":"EUVD-2026-114361","revision":null,"records":[{"revision":"da2e481f25054f97aeb5bb4b31e34522","observedAt":"2026-10-30T22:45:26.427+00:00","statement":{"source":"cve-program","id":"CVE-2026-62331","aliases":[],"title":"praktor: Telegram upload traversal permits persistent agent instruction injection","description":"praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled document filename into a destination path without sanitization, and `path.Join` collapses parent-directory traversal. A remote Telegram user who can message the bot can therefore write outside `uploads/` within the persistent agent workspace mounted at `/workspace/agent`. Because `allow_from: []` permits all senders by default, no prior authentication or privilege is required in that configuration. The attacker can plant or overwrite `CLAUDE.md`, instruction, skill, hook, or configuration files that the Claude agent reads and operates on across later runs, turning a document upload into stored instruction injection. The demonstrated arbitrary-write scope is the persistent agent workspace volume, not an unrestricted host-filesystem write. This issue is fixed in version 0.9.1.","state":0,"publishedAt":"2026-10-30T19:00:25.777+00:00","modifiedAt":"2026-10-30T19:46:25.082+00:00","affected":[{"ecosystem":"Vendor product","name":"praktor","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"mtzanidakis\",\n                    \"product\": \"praktor\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.9.1\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99","https://github.com/mtzanidakis/praktor/pull/228","https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141","https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62331","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-62331","identifiers":["CVE-2026-62331"]},"retained":false,"historicalAffected":[]},{"revision":"b283a88689f042d0b56300995312bc20","observedAt":"2026-11-13T21:08:02.19+00:00","statement":{"source":"euvd","id":"EUVD-2026-114361","aliases":["CVE-2026-62331","GHSA-48v2-6jcm-fc99"],"title":"praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled docum…","description":"praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled document filename into a destination path without sanitization, and `path.Join` collapses parent-directory traversal. A remote Telegram user who can message the bot can therefore write outside `uploads/` within the persistent agent workspace mounted at `/workspace/agent`. Because `allow_from: []` permits all senders by default, no prior authentication or privilege is required in that configuration. The attacker can plant or overwrite `CLAUDE.md`, instruction, skill, hook, or configuration files that the Claude agent reads and operates on across later runs, turning a document upload into stored instruction injection. The demonstrated arbitrary-write scope is the persistent agent workspace volume, not an unrestricted host-filesystem write. This issue is fixed in version 0.9.1.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":8.2,"severity":null}],"references":["https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99","https://github.com/mtzanidakis/praktor/pull/228","https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141","https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114361","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 30, 2026, 7:00:25 PM","dateUpdated":"Oct 30, 2026, 7:46:25 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-114361","identifiers":["EUVD-2026-114361","CVE-2026-62331","GHSA-48v2-6jcm-fc99"]},"retained":false,"historicalAffected":[]},{"revision":"e50d7256c8b64721b60010edc99c3902","observedAt":"2026-11-03T17:59:19.203+00:00","statement":{"source":"nvd","id":"CVE-2026-62331","aliases":[],"title":"praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled docum…","description":"praktor is a multi-agent Claude Code orchestrator with Telegram input and output, Docker isolation, and a Mission Control UI. Prior to 0.9.1, both Telegram upload sites in `internal/telegram/bot.go` concatenate the attacker-controlled document filename into a destination path without sanitization, and `path.Join` collapses parent-directory traversal. A remote Telegram user who can message the bot can therefore write outside `uploads/` within the persistent agent workspace mounted at `/workspace/agent`. Because `allow_from: []` permits all senders by default, no prior authentication or privilege is required in that configuration. The attacker can plant or overwrite `CLAUDE.md`, instruction, skill, hook, or configuration files that the Claude agent reads and operates on across later runs, turning a document upload into stored instruction injection. The demonstrated arbitrary-write scope is the persistent agent workspace volume, not an unrestricted host-filesystem write. This issue is fixed in version 0.9.1.","state":0,"publishedAt":"2026-10-30T19:18:33.45+00:00","modifiedAt":"2026-10-30T20:17:12.21+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":8.2,"severity":"HIGH"}],"references":["https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141","https://github.com/mtzanidakis/praktor/pull/228","https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1","https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-62331","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-22"],"productCriteria":[],"sourceDates":{"published":"2026-10-30T19:18:33.450","lastModified":"2026-10-30T20:17:12.210"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-62331","identifiers":["CVE-2026-62331"]},"retained":false,"historicalAffected":[]},{"revision":"6018a4fd2fb04bf8be752e6720fa4285","observedAt":"2026-11-05T23:38:32.248+00:00","statement":{"source":"osv","id":"GHSA-48v2-6jcm-fc99","aliases":["CVE-2026-62331","GO-2026-6908"],"title":"praktor: Path traversal in Telegram file uploads allows writing outside the agent workspace uploads/ directory (stored instruction injection)","description":"### Impact\n\nA remote Telegram user can write files to arbitrary paths inside an agent's persistent workspace volume (`praktor-wk-<workspace>`, mounted at `/workspace/agent`), escaping the documented `uploads/` directory.\n\nThe attacker controls the Telegram document filename, which was concatenated into the destination path without sanitization (`internal/telegram/bot.go`, at both upload sites) and resolved with `path.Join`, which collapses `../` sequences. A filename like `../../../CLAUDE.md` resolved to the root of the agent workspace volume, outside `uploads/`.\n\nBecause the agent workspace is the persistent working directory the Claude agent reads from and operates on across runs, writing outside `uploads/` lets an attacker plant or overwrite files the agent later consumes — e.g. `CLAUDE.md`, agent instruction/skill/hook files, or other config under `/workspace/agent`. This turns a file upload into a stored injection into the agent's instruction/execution surface (CWE-22 path traversal escalating to stored instruction injection).\n\n### Reachability\n\nBy default the bot has no user allowlist (`allow_from: []` means \"allow all\"), so the only precondition is that a user can message the bot. No authentication or prior privilege is required.\n\n### Affected versions\n\nThrough `v0.9.0` (and HEAD `3902d29`).\n\n### Patched versions\n\n`v0.9.1`, containing PR #228.\n\n### Workarounds\n\nRestrict `telegram.allow_from` to trusted user IDs to limit who can send uploads to the bot. Upgrading to `v0.9.1` is the recommended fix.\n\n### Fix (defense in depth)\n\n- `internal/telegram/bot.go`: apply `path.Base()` to the attacker-controlled filename at both upload sites, stripping directory components and `..`.\n- `internal/container/manager.go`: `WriteVolumeBytes` now rejects any path that escapes `/vol` after `path.Join`, protecting future callers.\n\n### Credit\n\nReported privately by [tonghuaroot](https://github.com/tonghuaroot), who provided a detailed root-cause analysis, a deployed end-to-end proof of concept against the real `container.Manager`, and fix verification.","state":0,"publishedAt":"2026-11-03T17:27:25+00:00","modifiedAt":"2026-11-05T23:25:53.4235003+00:00","affected":[{"ecosystem":"Go","name":"github.com/mtzanidakis/praktor","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.9.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99","https://nvd.nist.gov/vuln/detail/CVE-2026-62331","https://github.com/mtzanidakis/praktor/pull/228","https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141","https://github.com/mtzanidakis/praktor","https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1"],"sourceUrl":"https://github.com/advisories/GHSA-48v2-6jcm-fc99","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-48v2-6jcm-fc99","identifiers":["GHSA-48v2-6jcm-fc99","CVE-2026-62331","GO-2026-6908"]},"retained":false,"historicalAffected":[]},{"revision":"c9b153ba08474fc4be289a5d6911db99","observedAt":"2026-11-05T23:38:32.248+00:00","statement":{"source":"osv","id":"GO-2026-6908","aliases":["CVE-2026-62331","GHSA-48v2-6jcm-fc99"],"title":"praktor: Path traversal in Telegram file uploads allows writing outside the agent workspace uploads/ directory (stored instruction injection) in github.com/mtzanidakis/praktor","description":"praktor: Path traversal in Telegram file uploads allows writing outside the agent workspace uploads/ directory (stored instruction injection) in github.com/mtzanidakis/praktor","state":0,"publishedAt":"2026-11-05T22:55:09+00:00","modifiedAt":"2026-11-05T23:15:18.1396996+00:00","affected":[{"ecosystem":"Go","name":"github.com/mtzanidakis/praktor","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"0.9.1"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99","https://nvd.nist.gov/vuln/detail/CVE-2026-62331","https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141","https://github.com/mtzanidakis/praktor/pull/228","https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6908","license":"OSV · upstream source license applies","key":"osv:GO-2026-6908","identifiers":["GO-2026-6908","CVE-2026-62331","GHSA-48v2-6jcm-fc99"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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