Saitoha Libsixel vulnerabilities

• saitoha libsixel libsixel before 1.8.7-r1 and 1.9.0 through 1.10.5 Heap Out-of-Bounds Write via GIF CVE-2026-110601 Fix available 5.8 MediumOctober 14, 2026
• saitoha libsixel libsixel: integer overflow in parser CVE-2026-44637 Fix available 7.1 HighMay 14, 2026
• saitoha libsixel libsixel: integer overflow in encoder CVE-2026-44636 Fix available 7.4 HighMay 14, 2026
• saitoha libsixel libsixel: NULL pointer dereference CVE-2026-44638 Fix available 2.5 LowMay 14, 2026
• saitoha libsixel libsixel: Use-after-free in load_with_gdkpixbuf() CVE-2026-33023 Fix available 7.8 HighApril 14, 2026
• saitoha libsixel libsixel: Use-after-free in sixel_encoder_encode_bytes() CVE-2026-33021 Fix available 7.3 HighApril 14, 2026
• saitoha libsixel libsixel: Integer Overflow in write_png_to_file() leads to Heap-based Buffer Overflow CVE-2026-33020 Fix available 7.1 HighApril 14, 2026
• saitoha libsixel libsixel: Integer overflow leads to Out-of-bounds Read in img2sixel CVE-2026-33019 Fix available 7.1 HighApril 14, 2026
• saitoha libsixel libsixel: Use-After-Free in load_gif() CVE-2026-33018 Fix available 7.0 HighApril 14, 2026
• saitoha libsixel saitoha libsixel until v1.8.7 was discovered to contain a memory leak via the component... CVE-2025-61146 4.0 MediumFebruary 23, 2026
• saitoha libsixel saitoha libsixel img2sixel encoder.c sixel_debug_print_palette stack-based overflow CVE-2025-9300 Fix available 4.8 MediumAugust 21, 2025
• saitoha libsixel There is a floating point exception error in sixel_encoder_do_resize, encoder.c:633 in libsixel... CVE-2022-29978 Fix available 6.5 MediumMay 11, 2022
• saitoha libsixel There is an assertion failure error in stbi__jpeg_huff_decode, stb_image.h:1894 in libsixel... CVE-2022-29977 Fix available 6.5 MediumMay 11, 2022
• saitoha libsixel libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876. CVE-2022-27044 Fix available 8.8 HighApril 8, 2022
• saitoha libsixel libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388. CVE-2022-27046 Fix available 8.8 HighApril 8, 2022
• libsixel stb_image.h (aka the stb image loader) 2.19, as used in libsixel and other products, has a... CVE-2022-27938 5.5 MediumMarch 26, 2022
• saitoha libsixel In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in... CVE-2021-46700 6.5 MediumFebruary 19, 2022
• saitoha libsixel Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in... CVE-2020-21548 Fix available 8.8 HighSeptember 17, 2021
• saitoha libsixel Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c. CVE-2020-21547 Fix available 8.8 HighSeptember 17, 2021
• saitoha libsixel Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at... CVE-2020-21050 Fix available 6.5 MediumSeptember 14, 2021
• saitoha libsixel An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to... CVE-2020-21049 Fix available 6.5 MediumSeptember 14, 2021
• saitoha libsixel An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial... CVE-2020-21048 Fix available 6.5 MediumSeptember 14, 2021
• saitoha libsixel A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of... CVE-2020-21677 Fix available 6.5 MediumAugust 10, 2021
• saitoha libsixel Buffer Overflow in the "sixel_encoder_encode_bytes" function of Libsixel v1.8.6 allows attackers... CVE-2020-36120 7.5 HighApril 14, 2021
• saitoha libsixel Unverified indexs into the array lead to out of bound access in the gif_out_code function in... CVE-2020-19668 Fix available 6.5 MediumNovember 20, 2020
• saitoha libsixel load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an... CVE-2020-11721 Fix available 6.5 MediumApril 12, 2020
• saitoha libsixel libsixel 1.8.4 has an integer overflow in sixel_frame_resize in frame.c. CVE-2019-20205 Fix available 8.8 HighJanuary 1, 2020
• saitoha libsixel An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function... CVE-2019-20140 Fix available 8.8 HighDecember 30, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function... CVE-2019-20094 Fix available 8.8 HighDecember 30, 2019
• saitoha libsixel An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before... CVE-2019-20022 Fix available 6.5 MediumDecember 27, 2019
• saitoha libsixel A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel... CVE-2019-20024 Fix available 6.5 MediumDecember 27, 2019
• saitoha libsixel A memory leak was discovered in image_buffer_resize in fromsixel.c in libsixel 1.8.4. CVE-2019-20023 Fix available 6.5 MediumDecember 27, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.2. There is a heap-based buffer over-read in the function... CVE-2019-19778 Fix available 8.8 HighDecember 13, 2019
• saitoha libsixel, nothings stb image.h +1 more stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap... CVE-2019-19777 Fix available 8.8 HighDecember 13, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function... CVE-2019-19636 Fix available 9.8 CriticalDecember 8, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function... CVE-2019-19637 Fix available 9.8 CriticalDecember 8, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function... CVE-2019-19638 Fix available 9.8 CriticalDecember 8, 2019
• saitoha libsixel An issue was discovered in libsixel 1.8.2. There is a heap-based buffer overflow in the function... CVE-2019-19635 Fix available 9.8 CriticalDecember 8, 2019
• saitoha libsixel The load_pnm function in frompnm.c in libsixel.a in libsixel 1.8.2 has infinite recursion. CVE-2019-11024 Fix available 5.5 MediumApril 8, 2019
• saitoha libsixel In libsixel v1.8.2, there is a heap-based buffer over-read in the function load_jpeg() in the... CVE-2019-3574 Fix available 7.8 HighJanuary 2, 2019
• saitoha libsixel In libsixel v1.8.2, there is an infinite loop in the function sixel_decode_raw_impl() in the file... CVE-2019-3573 Fix available 5.5 MediumJanuary 2, 2019
• saitoha libsixel There is a heap-based buffer over-read at writer.c (function: write_png_to_file) in libsixel 1.8... CVE-2018-19763 Fix available 5.5 MediumNovember 30, 2018
• saitoha libsixel There is a heap-based buffer overflow at fromsixel.c (function: image_buffer_resize) in libsixel... CVE-2018-19762 Fix available 7.8 HighNovember 30, 2018
• saitoha libsixel There is an illegal address access at fromsixel.c (function: sixel_decode_raw_impl) in libsixel 1... CVE-2018-19761 Fix available 5.5 MediumNovember 30, 2018
• saitoha libsixel There is a heap-based buffer over-read at stb_image_write.h (function: stbi_write_png_to_mem) in... CVE-2018-19759 Fix available 5.5 MediumNovember 30, 2018
• saitoha libsixel There is a NULL pointer dereference at function sixel_helper_set_additional_message (status.c) in... CVE-2018-19757 Fix available 6.5 MediumNovember 30, 2018
• saitoha libsixel There is a heap-based buffer over-read at stb_image.h (function: stbi__tga_load) in libsixel 1.8... CVE-2018-19756 Fix available 5.5 MediumNovember 30, 2018
• saitoha libsixel libsixel 1.8.1 has a memory leak in sixel_allocator_new in allocator.c. CVE-2018-14073 Fix available 7.5 HighJuly 15, 2018
• saitoha libsixel libsixel 1.8.1 has a memory leak in sixel_decoder_decode in decoder.c, image_buffer_resize in... CVE-2018-14072 Fix available 7.5 HighJuly 15, 2018