Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-53530— ratex-parser panics on `\verb` with a multibyte delimiter (UTF-8 byte-boundary slice)

Quick assessment

Affected
erweixin RaTeX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

erweixin RaTeX是erweixin个人开发者的一款文本排版工具。 erweixin RaTeX 0.1.11之前版本存在安全漏洞，该漏洞源于解析器在处理\verb命令时使用字节索引切片参数，当分隔符为多字节UTF-8字符时触发Rust panic并中止整个进程，可能导致拒绝服务。

CVSS 8.7 · High EPSS 0.43% · P37

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
erweixin RaTeX < 0.1.11 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-53530

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
ratex-parser panics on `\verb` with a multibyte delimiter (UTF-8 byte-boundary slice)
Source: CVE Program / CVE List V5
Vulnerability Description
RaTeX is a KaTeX-compatible math rendering engine written in Rust. Prior to version 0.1.11, the public parser entrypoint `ratex_parser::parse(&str)` panics on the 9-byte input `\verbéxé` (i.e. `\verb` followed by the non-ASCII delimiter `é`). When handling a `\verb` command, the parser slices the verbatim argument with byte indices (`arg[1..arg.len() - 1]`); if the delimiter character is multibyte UTF-8, index `1` lands inside that character and Rust panics with *“byte index 1 is not a char boundary”*. Because RaTeX’s release profile sets `panic = "abort"` (`Cargo.toml:48`), the panic aborts the entire process — not just the current request/thread — making this a hard denial of service for any service that renders untrusted LaTeX. Version 0.1.11 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
erweixin RaTeX 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
erweixin RaTeX是erweixin个人开发者的一款文本排版工具。 erweixin RaTeX 0.1.11之前版本存在安全漏洞，该漏洞源于解析器在处理\verb命令时使用字节索引切片参数，当分隔符为多字节UTF-8字符时触发Rust panic并中止整个进程，可能导致拒绝服务。
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
erweixin RaTeX < 0.1.11 -

II. Public POCs for CVE-2026-53530

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-53530

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-53530 (1)

IV. Related Vulnerabilities

Same product: RaTeX
Same vendor: erweixin
Same weakness: CWE-248