CVE-2026-40890— github.com/gomarkdown/markdown: Out-of-bounds Read in SmartypantsRenderer
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-40890
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
github.com/gomarkdown/markdown: Out-of-bounds Read in SmartypantsRenderer
Source: NVD (National Vulnerability Database)
Vulnerability Description
The package `github.com/gomarkdown/markdown` is a Go library for parsing Markdown text and rendering as HTML. Processing a malformed input containing a < character that is not followed by a > character anywhere in the remaining text with a SmartypantsRenderer will lead to Out of Bounds read or a panic. This vulnerability is fixed with commit 759bbc3e32073c3bc4e25969c132fc520eda2778.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Vulnerability Title
Markdown 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Markdown是gomarkdown开源的一个用于解析 Markdown 文本并渲染为 HTML 的 Go 库。 markdown存在安全漏洞，该漏洞源于使用SmartypantsRenderer处理包含<字符但后续文本中无>字符的畸形输入时，可能导致越界读取或程序崩溃。
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 |
|---|---|---|---|---|
| gomarkdown | markdown | < 759bbc3e32073c3bc4e25969c132fc520eda2778 | - |
II. Public POCs for CVE-2026-40890
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-40890
请登录查看更多情报信息。
IV. Related Vulnerabilities
Same weakness: CWE-125
- CVE-2026-8177
XML::LibXML versions through 2.0210 for Perl read out-of-bou - CVE-2026-6104
Global buffer over-read in mb_convert_encoding() with attack - CVE-2026-7258
Out-of-bounds read in urldecode() on NetBSD - CVE-2026-8186
Open5GS NF client.c ogs_sbi_client_send_via_scp_or_sepp out- - CVE-2026-3508
ASUS System Control Interface 缓冲区错误漏洞
V. Comments for CVE-2026-40890
No comments yet