HappySeaFox Sail up to 0.9.10 PSD helpers.c psd_private_sail_pixel_format heap-based overflow

Summaryinfo

A vulnerability was found in HappySeaFox Sail up to 0.9.10 and classified as critical. Affected by this issue is the function psd_private_sail_pixel_format of the file src/sail-codecs/psd/helpers.c of the component PSD Handler. Such manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2026-54627. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in HappySeaFox Sail up to 0.9.10 and classified as critical. Affected by this issue is the function psd_private_sail_pixel_format of the file src/sail-codecs/psd/helpers.c of the component PSD Handler. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability. CVE summarizes:

SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. In 0.9.10 and earlier, psd_private_sail_pixel_format() in src/sail-codecs/psd/helpers.c resolves a one-channel PSD in Bitmap color mode to SAIL_PIXEL_FORMAT_BPP1_INDEXED without requiring the file depth to be one, so the pixel buffer uses one-bit rows while sail_codec_load_frame_v8_psd() in src/sail-codecs/psd/psd.c accepts depth == 8 and writes one attacker-controlled byte per pixel. Loading a crafted PSD through sail_load_from_file() or sail_load_from_memory() therefore writes beyond each heap row, causing memory corruption, a reliable crash, or potential code execution. This mode/depth mismatch is distinct from GHSA-rcqx-gc76-r9mv and GHSA-wcj8-hxxf-pq2c. This issue is fixed in version 1.0.0.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-54627 since 06/15/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

Upgrading to version 1.0.0 eliminates this vulnerability.

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Productinfo

Vendor

• HappySeaFox

Name

• Sail

Version

• 0.9.0
• 0.9.1
• 0.9.2
• 0.9.3
• 0.9.4
• 0.9.5
• 0.9.6
• 0.9.7
• 0.9.8
• 0.9.9
• 0.9.10

Website

• Product: https://github.com/HappySeaFox/sail/

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