Out-of-bounds Read in Ansilove Libansilove
CVE-2026-111143
Ansilove libansilove through 1.4.2 contains an out-of-bounds read vulnerability in ansilove_xbin() in src/loaders/xbin.c that lacks bounds checks for compressed run-length records. Attackers can supply a crafted compressed XBIN file ending in a control byte such as 0x7F to read past the input buffer, crashing applications that render untrusted XBIN art.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@haind-pwn/libansilove-xbin-rle-oob-read-and-null-font-deref (technical-description, exploit)
- github.com/ansilove/libansilove/blob/f1b05447aa566aa4eef9b05ebf8c2aaf1e379cd3/s… (technical-description)
- github.com/ansilove/libansilove (product)
- www.vulncheck.com/advisories/ansilove-libansilove-through-1.4.2-out-of-bounds-r… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111143?
- CVE-2026-111143 is a medium-severity vulnerability in Ansilove Libansilove, classified under Out-of-bounds Read. CVSS score: 5.5/10. Published 2026-10-15.
- How severe is CVE-2026-111143?
- Medium severity. CVSS v3 base score is 5.5 out of 10.