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Vulnerabilities

Vulnerability · CVE-2026-40492

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles.

Published Apr 18, 2026 · catalog updated Jun 17, 2026 · SAIL is a cross-platform

Check if you run it

No confirmed exploitation is on record for CVE-2026-40492. EPSS is 0.55%. Act only if a listed version of SAIL is a cross-platform is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (SAIL is a cross-platform).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.55%
Remediation
Advisory link
Affected products
See sources for product scope

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 but the byte-swap code uses independently. When (BPP8_INDEXED, 1 byte/pixel buffer) but , the byte-swap loop accesses memory as , 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 validation. Commit 36aa5c7ec8a2bb35f6fb867a1177a6f141156b02 contains a patch.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-40492

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-40492. EPSS is 0.55%. Act only if a listed version of SAIL is a cross-platform is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 0.55%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 18, 2026 · NIST NVD

    Detected

    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 but the byte-swap code uses independently. When (BPP8_INDEXED, 1 byte/pixel buffer) but , the byte-swap loop accesses memory as , reading/writing 4x the allocated buffer size. Th

  2. Jun 17, 2026 · NIST NVD

    Updated

    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 but the byte-swap code uses independently. When (BPP8_INDEXED, 1 byte/pixel buffer) but , the byte-swap loop accesses memory as , reading/writing 4x the allocated buffer size. Th

Sources

  • CVE.orgVulnerability recordCVE-2026-40492

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-40492

    30-day exploitation probability 0.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-40492

    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 but the byte-swap code uses `bits_per_pixel

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.