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CVE-2025-58353— Promptcraft Forge Studio: Complete Sanitizer Bypass Enables XSS via Overlapping Patterns

Quick assessment

Affected
MarceloTessaro promptcraft-forge-studio
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.

Promptcraft Forge Studio是Marcelo Tessaro个人开发者的一个开发者工具包。 Promptcraft Forge Studio存在安全漏洞，该漏洞源于使用正则表达式黑名单清理用户输入不当，可能导致执行恶意有效载荷。

CVSS 8.2 · High EPSS 0.24% · P15
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I. Basic Information for CVE-2025-58353

Vulnerability Information
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Vulnerability Title
Promptcraft Forge Studio: Complete Sanitizer Bypass Enables XSS via Overlapping Patterns
Source: CVE Program / CVE List V5
Vulnerability Description
Promptcraft Forge Studio is a toolkit for evaluating, optimizing, and maintaining LLM-powered applications. All versions of Promptcraft Forge Studio sanitize user input using regex blacklists such as r`eplace(/javascript:/gi, '')`. Because the package uses multi-character tokens and each replacement is applied only once, removing one occurrence can create a new dangerous token due to overlap. The “sanitized” value may still contain an executable payload when used in href/src (or injected into the DOM). There is currently no fix for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Promptcraft Forge Studio 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Promptcraft Forge Studio是Marcelo Tessaro个人开发者的一个开发者工具包。 Promptcraft Forge Studio存在安全漏洞，该漏洞源于使用正则表达式黑名单清理用户输入不当，可能导致执行恶意有效载荷。
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
MarceloTessaro promptcraft-forge-studio >= 0 -

II. Public POCs for CVE-2025-58353

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III. Intelligence Information for CVE-2025-58353

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Vendor Advisories for CVE-2025-58353 (1)

IV. Related Vulnerabilities

Same product: promptcraft-forge-studio
Same vendor: MarceloTessaro
Same weakness: CWE-79

V. Comments for CVE-2025-58353

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