CVE-2026-27168— SAIL: Heap-based Buffer Overflow in Sail-codecs-xwd
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I. Basic Information for CVE-2026-27168
Vulnerability Information
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Vulnerability Title
SAIL: Heap-based Buffer Overflow in Sail-codecs-xwd
Source: NVD (National Vulnerability Database)
Vulnerability Description
SAIL is a cross-platform library for loading and saving images with support for animation, metadata, and ICC profiles. All versions are vulnerable to Heap-based Buffer Overflow through the XWD parser's use of the bytes_per_line value. The value os read directly from the file as the read size in io->strict_read(), and is never compared to the actual size of the destination buffer. An attacker can provide an XWD file with an arbitrarily large bytes_per_line, causing a massive write operation beyond the buffer heap allocated for the image pixels. The issue did not have a fix at the time of publication.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
SAIL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SAIL是SAIL开源的一款图像解码库。 SAIL存在安全漏洞，该漏洞源于XWD解析器使用bytes_per_line值，该值直接从文件中读取并用作读取大小，但未与目标缓冲区的实际大小进行比较，可能导致基于堆的缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| HappySeaFox | sail | <= 0.9.10 | - |
II. Public POCs for CVE-2026-27168
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same weakness: CWE-122
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