CVE catalog

CVE-2026-40492

DEBIAN-CVE-2026-40492

Severity: Unknown · CVSS 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Apr 18, 2026, 3:16:13 AM UTC
Updated: Oct 1, 2026, 3:02:45 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.33% · Oct 25, 2026

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02, the XWD codec resolves pixel format based on `pixmap_depth` but the byte-swap code uses `bits_per_pixel` independently. When `pixmap_depth=8` (BPP8_INDEXED, 1 byte/pixel buffer) but `bits_per_pixel=32`, the byte-swap loop accesses memory as `uint32_t*`, reading/writing 4x the allocated buffer size. This is a different vulnerability from the previously reported GHSA-3g38-x2pj-mv55 (CVE-2026-27168), which addressed `bytes_per_line` validation. Commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02 contains a patch.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	sail	13	`0.9.10-1`	vulnerable
Debian	sail	13	`0.9.10-2`	vulnerable
Debian	sail	13	`0.9.10-3`	vulnerable
Debian	sail	13	`0.9.8-1`	vulnerable
Debian	sail	13	`0.9.8-1+deb13u1`	vulnerable
Debian	sail	13	`0.9.9-1`	vulnerable
Debian	sail	13	`1.2.0-1`	vulnerable
Debian	sail	14	`0.9.10-1`	vulnerable
Debian	sail	14	`0.9.8-1`	vulnerable
Debian	sail	14	`0.9.9-1`	vulnerable
Debian	sail	14	`0.9.10-2`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	sail	deb	14	`0.9.10-2`	Not reported	DEBIAN-CVE-2026-40492	Not reported

OpenFactory catalog packages

[Debian 13 (Trixie)]

[libsail0t64]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-c++0t64]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-c++-dev]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-common0t64]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-common-dev]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-dev]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-manip0t64]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[libsail-manip-dev]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13
[sail-codecs]Affected
Source package: [sail]
Details (2)
- 0.9.8-1+deb13u1 · amd64 · trixie
  Affected
  pypi · sail · debian · 13
- 0.9.8-1+deb13u1 · arm64 · trixie
  Affected
  pypi · sail · debian · 13

Observed: Oct 23, 2026, 10:32:47 PM UTC

References

[FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]