Browse CVEs

HIGH 7.8 CVE-2026-44636 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. From to 1.8.7-r1, signed integer overflow in sixel_encode_highcolor's… Libsixel 1.8.7-r2+ Fix from $1,9502026-05-14 HIGH 7.1 CVE-2026-44637 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. From to 1.8.7-r1, a signed integer overflow in the SIXEL parser's ima… Libsixel 1.8.7-r2+ Fix from $1,9502026-05-14 HIGH 7.8 CVE-2026-33023 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. In versions 1.8.7 and prior, when built with the --with-gdk-pixbuf2 op… Libsixel after 1.8.7 Fix from $1,9502026-04-14 HIGH 7.3 CVE-2026-33021 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain a use-after-free vulnerability in six… Libsixel 1.8.7-r1+ Fix from $1,9502026-04-14 HIGH 7.1 CVE-2026-33019 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain an integer overflow leading to an out… Libsixel 1.8.7-r1+ Fix from $1,9502026-04-14 HIGH 7.1 CVE-2026-33020 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain an integer overflow which leads to a … Libsixel 1.8.7-r1+ Fix from $1,9502026-04-14 HIGH 7.0 CVE-2026-33018 libsixel is a SIXEL encoder/decoder implementation derived from kmiya's sixel. Versions 1.8.7 and prior contain a Use-After-Free vulnerability via th… Libsixel 1.8.7-r1+ Fix from $1,9502026-04-14 HIGH 7.8 CVE-2025-9300 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.… Libsixel 1.8.7+ Fix from $1,9502025-08-21 MEDIUM 6.5 CVE-2022-29977 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 vul… Libsixel No fix yet Fix from $1,6002022-05-11 MEDIUM 6.5 CVE-2022-29978 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… Libsixel No fix yet Fix from $1,6002022-05-11 HIGH 8.8 CVE-2022-27044 libsixel 1.8.6 is affected by Buffer Overflow in libsixel/src/quant.c:876. Libsixel No fix yet Fix from $1,9502022-04-08 HIGH 8.8 CVE-2022-27046 libsixel 1.8.6 suffers from a Heap Use After Free vulnerability in in libsixel/src/dither.c:388. Libsixel No fix yet Fix from $1,9502022-04-08 MEDIUM 6.5 CVE-2021-46700 In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free. Libsixel No fix yet Fix from $1,6002022-02-19 HIGH 8.8 CVE-2020-21547 Libsixel 1.8.2 contains a heap-based buffer overflow in the dither_func_fs function in tosixel.c. Libsixel Patch available Fix from $1,9502021-09-17 HIGH 8.8 CVE-2020-21548 Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c. Libsixel Patch available Fix from $1,9502021-09-17 MEDIUM 6.5 CVE-2020-21048 An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file. Libsixel 1.8.4+ Fix from $1,6002021-09-14 MEDIUM 6.5 CVE-2020-21049 An invalid read in the stb_image.h component of libsixel prior to v1.8.5 allows attackers to cause a denial of service (DOS) via a crafted PSD file. Libsixel 1.8.5+ Fix from $1,6002021-09-14 MEDIUM 6.5 CVE-2020-21050 Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c. Libsixel 1.8.3+ Fix from $1,6002021-09-14 MEDIUM 6.5 CVE-2020-21677 A heap-based buffer overflow in the sixel_encoder_output_without_macro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of … Libsixel Patch available Fix from $1,6002021-08-10 HIGH 7.5 CVE-2020-36120 Buffer Overflow in the "sixel_encoder_encode_bytes" function of Libsixel v1.8.6 allows attackers to cause a Denial of Service (DoS). Libsixel No fix yet Fix from $1,9502021-04-14 MEDIUM 6.5 CVE-2020-19668 Unverified indexs into the array lead to out of bound access in the gif_out_code function in fromgif.c in libsixel 1.8.6. Libsixel No fix yet Fix from $1,6002020-11-20 MEDIUM 6.5 CVE-2020-11721 load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of ser… Libsixel No fix yet Fix from $1,6002020-04-12 HIGH 8.8 CVE-2019-20205 libsixel 1.8.4 has an integer overflow in sixel_frame_resize in frame.c. Libsixel No fix yet Fix from $1,9502020-01-02 HIGH 8.8 CVE-2019-20140 An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function gif_out_code at fromgif.c. Libsixel Patch available Fix from $1,9502019-12-30 HIGH 8.8 CVE-2019-20094 An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function gif_init_frame at fromgif.c. Libsixel No fix yet Fix from $1,9502019-12-30 MEDIUM 6.5 CVE-2019-20024 A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4. Libsixel 1.8.4+ Fix from $1,6002019-12-27 MEDIUM 6.5 CVE-2019-20022 An invalid memory address dereference was discovered in load_pnm in frompnm.c in libsixel before 1.8.3. Libsixel 1.8.3+ Fix from $1,6002019-12-27 MEDIUM 6.5 CVE-2019-20023 A memory leak was discovered in image_buffer_resize in fromsixel.c in libsixel 1.8.4. Libsixel 1.8.4+ Fix from $1,6002019-12-27 HIGH 8.8 CVE-2019-19778 An issue was discovered in libsixel 1.8.2. There is a heap-based buffer over-read in the function load_sixel at loader.c. Libsixel No fix yet Fix from $1,9502019-12-13 CRITICAL 9.8 CVE-2019-19637 An issue was discovered in libsixel 1.8.2. There is an integer overflow in the function sixel_decode_raw_impl at fromsixel.c. Libsixel Mitigation only Fix from $2,3002019-12-08