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CVE-2026-82727: CWE-209 Generation of Error Message Containing Sensitive Information in ash-project ash_phoenix

0
Low
VulnerabilityCVE-2026-82727cvecve-2026-82727cwe-209
Published: 08/31/2026 (08/31/2026, 03:03:58 UTC)
Source: CVE Database V5
Vendor/Project: ash-project
Product: ash_phoenix

Description

Generation of Error Message Containing Sensitive Information vulnerability in ash-project ash_phoenix writes the entire raw submitted param map into an exception message, so secrets submitted alongside a union form field leak into logs, crash reports and the dev error page. When AshPhoenix.Form.Auto builds a union sub-form and the submitted _union_type does not match a configured type, both raise sites built the message with inspect(params, pretty: true), embedding the full untrusted param map, and also inspected the internal union constraints[:types]. Because the message is constructed by the library rather than Phoenix's parameter logger, config :phoenix, :filter_parameters never redacts it. An attacker controls both the trigger and the contents: submitting %{"_union_type" => "nope", "password" => "..."} puts the password verbatim in the raised message. The fix reports only the offending _union_type and the valid type names, dropping the param and constraints dumps. This issue affects ash_phoenix: from 1.2.17 before 2.3.25.

CVSS v4.0

Score 2.3low

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
None
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Affected software

ash_phoenix
pkg:hex/ash_phoenix
Affected versions
>=1.2.17 <2.3.25
GitHub Actionsmore threats →cve
ash-project/ash_phoenix
pkg:github/ash-project/ash_phoenix
CPE configurations
cpe:2.3:a:ash-project:ash_phoenix:*:*:*:*:*:*:*:*

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Technical Details

Data Version
5.2
Assigner Short Name
EEF
Date Reserved
2026-08-31T00:59:08.960Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a94f72bacd9273b497b1a26

Added to database: 08/31/2026, 03:38:19 UTC

Last updated: 08/31/2026, 03:38:19 UTC

Views: 1

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