{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33642", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-23T14:24:11.620Z", "datePublished": "2026-05-19T18:04:42.482Z", "dateUpdated": "2026-05-19T19:13:23.671Z"}, "containers": {"cna": {"title": "Kitty has a Heap Buffer Over-Read/Write via Integer Overflow in compose_rectangles Bounds Check", "problemTypes": [{"descriptions": [{"cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-787", "lang": "en", "description": "CWE-787: Out-of-bounds Write", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-125", "lang": "en", "description": "CWE-125: Out-of-bounds Read", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-qfgm-2c64-6x3x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-qfgm-2c64-6x3x"}, {"name": "https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34", "tags": ["x_refsource_MISC"], "url": "https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34"}], "affected": [{"vendor": "kovidgoyal", "product": "kitty", "versions": [{"version": "< 0.47.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-19T18:04:42.482Z"}, "descriptions": [{"lang": "en", "value": "Kitty is a cross-platform GPU based terminal. In versions 0.46.2 and below, the handle_compose_command() function in kitty/graphics.c performs bounds validation on composition offsets using unsigned 32-bit arithmetic that is subject to integer wrapping, potentially leading to Heap Buffer Over-Read/Write. An attacker who can write escape sequences to a kitty terminal (e.g., via a malicious file, SSH login banner, or piped content) can supply crafted x_offset/y_offset values that pass the bounds check after wrapping but cause massive out-of-bounds heap memory access in compose_rectangles(). No user interaction is required. No non-default configuration is required. The attacker only needs the ability to produce output in a kitty terminal window. This issue has been fixed in version 0.47.0."}], "source": {"advisory": "GHSA-qfgm-2c64-6x3x", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-qfgm-2c64-6x3x", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-19T19:12:56.774256Z", "id": "CVE-2026-33642", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-19T19:13:23.671Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Kitty is a cross-platform GPU based terminal. In versions 0.46.2 and below, the handle_compose_command() function in kitty/graphics.c performs bounds validation on composition offsets using unsigned 32-bit arithmetic that is subject to integer wrapping, potentially leading to Heap Buffer Over-Read/Write. An attacker who can write escape sequences to a kitty terminal (e.g., via a malicious file, SSH login banner, or piped content) can supply crafted x_offset/y_offset values that pass the bounds check after wrapping but cause massive out-of-bounds heap memory access in compose_rectangles(). No user interaction is required. No non-default configuration is required. The attacker only needs the ability to produce output in a kitty terminal window. This issue has been fixed in version 0.47.0."}], "id": "CVE-2026-33642", "lastModified": "2026-05-19T19:16:49.293", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.3, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-19T19:16:49.293", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34"}, {"source": "security-advisories@github.com", "url": "https://github.com/kovidgoyal/kitty/security/advisories/GHSA-qfgm-2c64-6x3x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}, {"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-787"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-05-19T19:30:12.410893+00:00", "updated": "2026-05-19T19:30:12.410905+00:00", "vendors": []}