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CVE-2026-66353: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in woylie doggo

0
Medium
VulnerabilityCVE-2026-66353cvecve-2026-66353cwe-79
Published: 08/27/2026 (08/27/2026, 16:44:59 UTC)
Source: CVE Database V5
Vendor/Project: woylie
Product: doggo

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.

CVSS v4.0

Score 5.3medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
Passive
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

doggo
pkg:hex/doggo
Affected versions
>=0.1.0 <0.14.8
GitHub Actionsmore threats →cve
woylie/doggo
pkg:github/woylie/doggo
CPE configurations
cpe:2.3:a:woylie:doggo:*:*:*:*:*:*:*:*

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Technical Details

Data Version
5.2
Assigner Short Name
EEF
Date Reserved
2026-08-25T10:30:01.736Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a909cfcacd9273b49b2d30e

Added to database: 08/27/2026, 20:24:28 UTC

Last updated: 08/28/2026, 02:10:05 UTC

Views: 7

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