{"id":"CVE-2026-33633","state":"PUBLISHED","title":"Kitty has a Heap Buffer Overflow in its Graphics Protocol Handler","description":"Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is triggered by a single APC graphics protocol command with a PNG format declaration (f=100) whose payload exceeds twice the initial buffer capacity. The overflow is attacker-controlled in both length and content, causing DoS and potentially escalation to RCE itself. This issue has been fixed in version 0.47.0.","publishedAt":"2026-05-19T17:36:07.762Z","updatedAt":"2026-05-20T03:55:46.409Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["kovidgoyal kitty"],"affected":[{"vendor":"kovidgoyal","product":"kitty","versions":[{"version":"< 0.47.0","status":"affected"}]}],"references":["https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g","https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33633.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33633","state":"PUBLISHED","datePublished":"2026-05-19T17:36:07.762Z","dateUpdated":"2026-05-20T03:55:46.409Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-23T14:24:11.618Z"},"containers":{"cna":{"title":"Kitty has a Heap Buffer Overflow in its Graphics Protocol Handler","descriptions":[{"lang":"en","value":"Kitty is a cross-platform GPU based terminal. Versions 0.46.2 and below contain a heap buffer overflow in load_image_data() that allows any process which can write to the terminal's stdin to crash kitty immediately. The vulnerability is triggered by a single APC graphics protocol command with a PNG format declaration (f=100) whose payload exceeds twice the initial buffer capacity. The overflow is attacker-controlled in both length and content, causing DoS and potentially escalation to RCE itself. This issue has been fixed in version 0.47.0."}],"affected":[{"vendor":"kovidgoyal","product":"kitty","versions":[{"version":"< 0.47.0","status":"affected"}]}],"references":[{"url":"https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g","name":"https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34","name":"https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-19T17:36:07.762Z"},"source":{"advisory":"GHSA-j68c-v8x4-269g","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-19T00:00:00+00:00","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-33633"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-20T03:55:46.409Z"}}]}}}