Divide By Zero Affecting sail package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN13-SAIL-21785434
- published29 Oct 2026
- disclosed28 Oct 2026
Introduced: 28 Oct 2026
NewCVE-2026-59959 (opens in a new tab)How to fix?
There is no fixed version for Debian:13 sail.
NVD Description
Note: Versions mentioned in the description apply only to the upstream sail package and not the sail package as distributed by Debian.
See How to fix? for Debian:13 relevant fixed versions and status.
SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to version 1.0.2, the built-in WebP decoder can crash during loader initialization when processing a malformed animated WebP file with inconsistent container or ANMF frame metadata. In sail_codec_load_init_v8_webp() in src/sail-codecs/webp/webp.c, WebPDemuxGetI with WEBP_FF_CANVAS_WIDTH can return a zero image_local->width, which is then used as a divisor when calculating bytes_per_pixel from the image row size. The division happens before frame decoding and before generic image skeleton validation in src/sail/sail_advanced.c, causing an arithmetic fault and process termination. Applications accepting untrusted WebP images can consequently suffer denial of service; builds must include the affected WebP codec. This issue is fixed in version 1.0.2.