CVE-2026-54692

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. Prior to 1.0.0, sail_codec_load_frame_v8_xbm() in src/sail-codecs/xbm/xbm.c allocates the decoded pixel buffer using the X11 one-byte-per-literal layout, but an X10 static short file causes the flat decode loop to write two file-controlled bytes per literal. When ceil(width/8) produces an odd row stride, the X10 literal count includes a padding byte for every row, but the destination has no space for those bytes, so loading the XBM through sail_load_from_file, sail_load_from_memory, or sail_start_loading_* produces a forward heap overwrite that scales with image height. The X11 static char path is not affected. The overwrite can corrupt process state, cause reliable crashes, and potentially enable code execution in a susceptible consuming application. This issue is fixed in version 1.0.0.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/HappySeaFox/sail/commit/2991e18f806cf038038ee1ef9b08aa5d57480de1
https://github.com/HappySeaFox/sail/releases/tag/v1.0.0
https://github.com/HappySeaFox/sail/security/advisories/GHSA-gp27-qv2x-55v5
https://github.com/HappySeaFox/sail/security/advisories/GHSA-gp27-qv2x-55v5

Configurations

No configuration.

History

21 Sep 2026, 21:17

Type	Values Removed	Values Added
References	~~() https://github.com/HappySeaFox/sail/security/advisories/GHSA-gp27-qv2x-55v5 -~~	() https://github.com/HappySeaFox/sail/security/advisories/GHSA-gp27-qv2x-55v5 -

17 Sep 2026, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-17 20:16

Updated : 2026-09-24 21:25

NVD link : CVE-2026-54692

Mitre link : CVE-2026-54692

CVE.ORG link : CVE-2026-54692

JSON object : View

Products Affected

No product.

CWE

CWE-131

Incorrect Calculation of Buffer Size

CWE-787

Out-of-bounds Write

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