CVE-2026-62331

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{"affected": [{"affectedData": [{"product": "praktor", "vendor": "mtzanidakis", "versions": [{"status": "affected", "version": "< 0.9.1"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-62331", "lastModified": "2026-10-30T20:17:12.210", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-62331", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-30T19:45:09.898798Z", "version": "2.0.3"}}]}, "published": "2026-10-30T19:18:33.450", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/mtzanidakis/praktor/commit/c3731eeda01c0b3ec1dbd13cccd5a147c3182141"}, {"source": "security-advisories@github.com", "url": "https://github.com/mtzanidakis/praktor/pull/228"}, {"source": "security-advisories@github.com", "url": "https://github.com/mtzanidakis/praktor/releases/tag/v0.9.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/mtzanidakis/praktor/security/advisories/GHSA-48v2-6jcm-fc99"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.9.1)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "praktor", "source": "cna", "vendor": "mtzanidakis"}, "product": "praktor", "vendor": "mtzanidakis"}], "created": "2026-10-30T20:45:15.228489+00:00", "updated": "2026-10-30T22:48:53.357837+00:00", "vendors": ["mtzanidakis", "mtzanidakis$PRODUCT$praktor"]}