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CVE-2026-66353— Doggo vulnerable to cross-site scripting via unescaped date field values

Quick assessment

Affected
woylie doggo
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.

在 woylie doggo 中存在一个“网页生成过程中输入未正确净化（跨站脚本攻击，XSS）”的漏洞，会导致反射型 XSS。 在 中的 函数将日期字段值包裹在 中返回。在 Phoenix.HTML 中， 表示“已转义，原样输出”。由于该函数未对值进行转义就直接标记为安全，导致该值在由字段组件渲染的 元素的 属性中保持不变地进入页面。任何通过普通 Phoenix 表单往返、且对 渲染用户可控参数的应用都会受影响：当表单验证失败时，已提交的值会被重新渲染回页面。 该漏洞的影响模式仅保留前 10 个字节，并丢弃更短的值

CVSS 5.3 · Medium
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I. Basic Information for CVE-2026-66353

Vulnerability Information
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Vulnerability Title
Doggo vulnerable to cross-site scripting via unescaped date field values
Source: CVE Program / CVE List V5
Vulnerability Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in woylie doggo allows Reflected XSS. Doggo.normalize_value/2 in lib/doggo.ex returned date field values wrapped in {:safe, ...}, the Phoenix.HTML marker meaning "already escaped, emit verbatim", without escaping them, so the value reached the value attribute of the <input> rendered by the field component unchanged. Any application rendering <.field type="date"> over user-controlled params is affected through the ordinary Phoenix form round-trip, where a failed validation re-renders the submitted value. The pattern kept exactly the first ten bytes and discarded shorter values, capping a payload at ten bytes: enough to terminate the attribute and open an element or attach a short event handler, not enough to place attacker-chosen script inline. Only type="date" is affected. This issue affects doggo: from 0.1.0 before 0.14.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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

Affected Products

Vendor Product Affected Versions CPE Subscribe
woylie doggo 0.1.0 ~ 0.14.8 cpe:2.3:a:woylie:doggo:*:*:*:*:*:*:*:*
woylie doggo ae65fed72982ec97f95af931686c627b19c2b58d ~ 0161c976a114a4a4faee22d599b3fd5f147fc443 cpe:2.3:a:woylie:doggo:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-66353

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III. Intelligence Information for CVE-2026-66353

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Patches & Fixes for CVE-2026-66353 (1)

Vendor Advisories for CVE-2026-66353 (2)

Other References for CVE-2026-66353 (1)

IV. Related Vulnerabilities

Same weakness: CWE-79

V. Comments for CVE-2026-66353

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