Libsixel Project: >> Libsixel Security Vulnerabilities
A vulnerability was found in saitoha libsixel up to 1.10.3. Affected by this issue is the function sixel_debug_print_palette of the file src/encoder.c of the component img2sixel. The manipulation results in stack-based buffer overflow. The attack must be initiated from a local position. The exploit has been made public and could be used. The patch is identified as 316c086e79d66b62c0c4bc66229ee894e4fdb7d1. Applying a patch is advised to resolve this issue.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-08-21
There is an assertion failure error in stbi__jpeg_huff_decode, stb_image.h:1894 in libsixel img2sixel 1.8.6. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted JPEG file.
CVSS Score
6.5
EPSS Score
0.003
Published
2022-05-11
There is a floating point exception error in sixel_encoder_do_resize, encoder.c:633 in libsixel img2sixel 1.8.6. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted JPEG file.
CVSS Score
6.5
EPSS Score
0.003
Published
2022-05-11
libsixel before 1.10 is vulnerable to Buffer Overflow in libsixel/src/quant.c:867.
CVSS Score
8.8
EPSS Score
0.004
Published
2022-04-08
libsixel 1.10.0 is vulnerable to Use after free in libsixel/src/dither.c:379.
CVSS Score
8.8
EPSS Score
0.004
Published
2022-04-08
libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876.
CVSS Score
8.8
EPSS Score
0.004
Published
2022-04-08
libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388.
CVSS Score
8.8
EPSS Score
0.003
Published
2022-04-08
stb_image.h (aka the stb image loader) 2.19, as used in libsixel and other products, has a reachable assertion in stbi__create_png_image_raw.
CVSS Score
5.5
EPSS Score
0.001
Published
2022-03-26
In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.
CVSS Score
6.5
EPSS Score
0.003
Published
2022-02-19
In Libsixel prior to and including v1.10.3, a NULL pointer dereference in the stb_image.h component of libsixel allows attackers to cause a denial of service (DOS) via a crafted PICT file.
CVSS Score
6.5
EPSS Score
0.002
Published
2022-01-25
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