CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload

Mattermost versions 11.6.x = 11.6.5, 10.11.x = 10.11.20, 11.8.x = 11.8.1, 11.7.x = 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom...

CVE-2026-10819 Mattermost Server Denial of Service via Animated GIF Emoji Upload

Mattermost versions 11.6.x = 11.6.5, 10.11.x = 10.11.20, 11.8.x = 11.8.1, 11.7.x = 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom...

CVE-2026-10819

The CVE CVE-2026-10819 affects Mattermost server versions 11.6.x <= 11.6.5, 10.11.x <= 10.11.20, 11.8.x <= 11.8.1, and 11.7.x

CVE-2026-10819: Improper Handling of Highly Compressed Data (Data Amplification)

Mattermost versions 11.6.x = 11.6.5, 10.11.x = 10.11.20, 11.8.x = 11.8.1, 11.7.x = 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom...

PT-2026-64921

Mattermost versions 11.6.x = 11.6.5, 10.11.x = 10.11.20, 11.8.x = 11.8.1, 11.7.x = 11.7.4 fail to limit the number of frames and enforce the file size cap on animated GIF uploads, which allows an authenticated attacker to cause a denial of service via a crafted animated GIF uploaded as a custom...

CVE-2026-30141

The bitbank2 AnimatedGIF library, specifically version v2.2.0 , contains a buffer overflow vulnerability within the DecodeLZW function. This flaw allows remote attackers to cause a denial of service (crash) or potentially execute arbitrary code by providing a specially crafted GIF file. No specif...

DEBIAN-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 the loadgif function in fromgif.c, where a single sixelframet object is reused across all frames of an animated GIF and gifinitframe unconditionally...

UBUNTU-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 the loadgif function in fromgif.c, where a single sixelframet object is reused across all frames of an animated GIF and gifinitframe unconditionally...

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 the loadgif function in fromgif.c, where a single sixelframet object is reused across all frames of an animated GIF and gifinitframe unconditionally...

libsixel 资源管理错误漏洞

Libsixel is a software package developed by Hayaki Saito, which provides encoding/decoding implementations for DEC SIXEL graphics and other conversion programs. Versions of Libsixel 1.8.7 and earlier contained a resource management vulnerability. This vulnerability stemmed from the loadgif...

CVE-2026-33018: Use After Free

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 the loadgif function in fromgif.c, where a single sixelframet object is reused across all frames of an animated GIF and gifinitframe unconditionally...

PT-2026-32925

Name of the Vulnerable Software and Affected Versions libsixel versions prior to 1.8.7-r1 Description A Use-After-Free issue exists in the load gif function within fromgif.c. This occurs because a single sixel frame t object is reused across all frames of an animated GIF, and the gif init frame...

EUVD-2007-5356

Malware in sbrugna...

EUVD-2004-0997

Malware in sbrugna...

EUVD-2010-4016

Malware in sbrugna...

EUVD-2020-27263

Malware in sbrugna...

EUVD-2011-2622

Malware in sbrugna...

CVE-2011-2639

Opera before 11.10 does not properly handle hidden animated GIF images, which allows remote attackers to cause a denial of service CPU consumption via an image file that triggers continual repaints...

CVE-2023-39114

ngiflib commit 84a75 was discovered to contain a segmentation violation via the function SDLLoadAnimatedGif at ngiflibSDL.c. This vulnerability is triggered when running the program SDLaffgif...

ngiflib Security Vulnerabilities

ngiflib is a library for decoding the GIF image format written in C. The vulnerability exists in ngiflibSDL.c file. A security vulnerability exists in ngiflib, which stems from a segmentation error in the SDLLoadAnimatedGif method of the ngiflibSDL.c file...