CVE-2026-33633
7.5 HIGHKitty is a cross-platform GPU based terminal
Published: 2026-05-19 · Last updated: 2026-05-19
Severity and scoring
- CVSS
- 7.5 HIGH
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CWE
- CWE-122
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2026-33633
- [Other]https://github.com/kovidgoyal/kitty/commit/e9661f0f3afb4e4dbffa509adfb3df3c9780ad34
- [Other]https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g
- [Other]https://github.com/kovidgoyal/kitty/security/advisories/GHSA-j68c-v8x4-269g
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