CVE-2026-54055

{"id": "CVE-2026-54055", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54055", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-15T18:43:37.469547Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.0, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:L", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 4.2, "exploitabilityScore": 0.8}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "kovidgoyal", "product": "kitty", "versions": [{"status": "affected", "version": "< 0.47.2"}]}]}], "published": "2026-06-12T20:16:47.450", "references": [{"url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxh", "tags": ["Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-q446-x7q6-vcxh", "tags": ["Mitigation", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-59"}, {"lang": "en", "value": "CWE-367"}, {"lang": "en", "value": "CWE-426"}]}], "descriptions": [{"lang": "en", "value": "Kitty is a cross-platform GPU based terminal. In versions prior to 0.47.2, a local privilege escalation vulnerability exists in kitty's file transmission protocol where a child process running in the terminal can write to arbitrary files on the filesystem by exploiting a TOCTOU (Time-of-Check-Time-of-Use) race condition between symlink validation and file creation. The `os.open()` call used to create files does not use `O_NOFOLLOW`, allowing an attacker to create a symlink between the initial stat check and the actual file open, causing the write to follow the symlink to an arbitrary destination. Version 0.47.2 fixes the issue."}], "lastModified": "2026-06-17T10:58:10.520", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:kovidgoyal:kitty:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5667270C-3C0A-48E0-B817-5B753E6952AC", "versionEndExcluding": "0.47.2"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}