libansilove 1.3.0 through 1.4.2 contains a NULL pointer dereference vulnerability in ansilovexbin() that allows attackers to crash applications by supplying a crafted XBIN file. Attackers can set the 512-character flag without the custom-font flag, causing drawchar() to index a NULL highfontdataxbin pointer and terminate the process.

Ansilove libansilove through 1.4.2 contains an out-of-bounds read vulnerability in ansilovexbin() 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.

The ansiloveansi function in loaders/ansi.c in libansilove 1.0.0 allows remote attackers to cause a denial of service (out-of-bounds read and application crash) via a crafted file.

Unspecified vulnerability in the loaders (load.php) in Ansilove before 1.03 allows remote attackers to read arbitrary files via unspecified vectors involving "converting files accessible by the webserver".

Ansilove before 1.03 does not filter uploaded file extensions, which allows remote attackers to execute arbitrary code by uploading arbitrary files with dangerous extensions, then accessing them directly in the upload directory.