CVE-2026-82727

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Source
https://cve.org/CVERecord?id=CVE-2026-82727
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82727.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-82727
Aliases
Published
2026-08-31T03:03:58.982Z
Modified
2026-09-01T03:46:38.069025934Z
Severity
  • 2.3 (Low) CVSS_V4 - 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 CVSS Calculator
Summary
AshPhoenix Form.Auto leaks submitted params in an unknown _union_type error message
Details

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 uniontype 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 %{"uniontype" => "nope", "password" => "..."} puts the password verbatim in the raised message. The fix reports only the offending uniontype and the valid type names, dropping the param and constraints dumps.

This issue affects ash_phoenix: from 1.2.17 before 2.3.25.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82727.json",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "a3436fcc321e3b34c242cceaf62c3c92bc1a452b"
                },
                {
                    "fixed": "0c1775c3cf8988f9abd10a8f92315afc5f06f16d"
                }
            ]
        }
    ],
    "cna_assigner": "EEF",
    "cwe_ids": [
        "CWE-209"
    ]
}
References

Affected packages

Git / github.com/ash-project/ash_phoenix

Affected ranges

Type
GIT
Repo
https://github.com/ash-project/ash_phoenix
Events
Introduced
c7e220099edd5e10f7ad8fef6387169b2551f96f
Fixed
1e38e7dc8838426cc94656238d9208759c661c03
Fixed
0c1775c3cf8988f9abd10a8f92315afc5f06f16d
Database specific
Show details 
{
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "1.2.17"
        },
        {
            "fixed": "2.3.25"
        }
    ]
}

Affected versions

v1.*
v1.2.17
v1.2.18
v1.2.19
v1.2.20
v1.2.21
v1.2.22
v1.2.23
v1.2.24
v1.2.25
v1.2.26
v1.3.0
v1.3.1
v1.3.2
v1.3.3
v1.3.4
v2.*
v2.0.0-rc.0
v2.0.0-rc.1
v2.0.0-rc.2
v2.0.0-rc.3
v2.0.0-rc.4
v2.0.0-rc.5
v2.0.0-rc.6
v2.0.0-rc.7
v2.0.0-rc.8
v2.0.1
v2.0.2
v2.0.3
v2.1.1
v2.1.10
v2.1.11
v2.1.12
v2.1.14
v2.1.15
v2.1.16
v2.1.17
v2.1.18
v2.1.19
v2.1.20
v2.1.21
v2.1.22
v2.1.23
v2.1.24
v2.1.25
v2.1.26
v2.1.3
v2.1.4
v2.1.5
v2.1.6
v2.1.7
v2.1.8
v2.1.9
v2.2.0
v2.3.0
v2.3.1
v2.3.10
v2.3.11
v2.3.12
v2.3.13
v2.3.14
v2.3.15
v2.3.16
v2.3.17
v2.3.18
v2.3.19
v2.3.2
v2.3.20
v2.3.21
v2.3.22
v2.3.23
v2.3.24
v2.3.3
v2.3.4
v2.3.5
v2.3.6
v2.3.7
v2.3.8
v2.3.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-82727.json"