What is CVE-2026-33633?

CVE-2026-33633 is a high-severity vulnerability in Kovidgoyal Kitty, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-05-19.

How severe is CVE-2026-33633?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Kovidgoyal Kitty

CVE-2026-33633

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 tr…

Vulnerability class: Buffer Overflow

EPSS: 0.000 (13.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Kovidgoyal Kitty — versions < 0.47.0

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33633?: CVE-2026-33633 is a high-severity vulnerability in Kovidgoyal Kitty, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2026-05-19.
How severe is CVE-2026-33633?: High severity. CVSS v3 base score is 7.5 out of 10.