EUVD-2026-67237Severity by source
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-delivered reflected XSS requires user interaction and changes scope to victim browser, with limited confidentiality and integrity impact; no authentication needed.
Primary rating from Vendor (EEF).
CVSS VectorVendor: EEF
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Reflected XSS in doggo's Phoenix date field component (versions 0.1.0 through 0.14.7) allows network-accessible, unauthenticated attackers to inject HTML into the rendered page when a form validation failure re-renders a user-supplied date value. The root cause is Doggo.normalize_value/2 wrapping the raw user input in Phoenix.HTML's {:safe, ...} marker - bypassing the framework's built-in escaping - before emitting it verbatim into the value attribute of the generated <input> element. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires three concurrent conditions: (1) the target Phoenix application must render the `<.field type="date">` component - no other doggo field types are affected; (2) the date field value must be populated from user-controlled request parameters (e.g., echoed from `params` on form re-render); and (3) the application must perform form validation that fails and re-renders the submitted value, as only the re-render path exposes the unescaped value in the output. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:P, score 5.3) accurately captures the key risk dimensions: network-reachable, low complexity, no privileges required, but user interaction is mandatory. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade doggo to version 0.14.8 or later; the fix is delivered in commit 0161c976a114a4a4faee22d599b3fd5f147fc443 (https://github.com/woylie/doggo/commit/0161c976a114a4a4faee22d599b3fd5f147fc443) and documented in advisory GHSA-w9rp-cf93-86pj. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-79 – Cross-site Scripting (XSS)
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External POC / Exploit Code
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