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CVE-2026-53531— ratex-parser has unbounded parser recursion that leads to stack overflow (process abort)

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之前版本存在资源管理错误漏洞，该漏洞源于递归下降解析器在处理嵌套组时无最大深度限制，可能导致栈溢出，从而造成不可恢复的进程拒绝服务。

CVSS 6.9 · Medium 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
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I. Basic Information for CVE-2026-53531

Vulnerability Information
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Vulnerability Title
ratex-parser has unbounded parser recursion that leads to stack overflow (process abort)
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, RaTeX’s recursive-descent parser recurses one (or more) native stack frame per nesting level at `{`, `\left`, `\sqrt{`, `^{`, etc, with no maximum depth limit. A short, ~10 KB input of nested groups overflows the 8 MB main-thread stack and aborts the process. With `panic = "abort"` (`Cargo.toml:48`), and because a Rust stack overflow is always a fatal `SIGABRT` regardless of panic strategy this is an unrecoverable, whole-process denial of service reachable from a single untrusted LaTeX string. 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:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
erweixin RaTeX 资源管理错误漏洞
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之前版本存在资源管理错误漏洞，该漏洞源于递归下降解析器在处理嵌套组时无最大深度限制，可能导致栈溢出，从而造成不可恢复的进程拒绝服务。
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-2026-53531

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III. Intelligence Information for CVE-2026-53531

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Vendor Advisories for CVE-2026-53531 (1)

IV. Related Vulnerabilities

Same product: RaTeX
Same vendor: erweixin
Same weakness: CWE-400