CVE-2017-20031Public exploitNetwork attack vector

Password-hash disclosure via unrestricted user-list sorting

Published Jun 10, 2022 · Updated Apr 15, 2025

Information disclosure in phpList 3.2.6 allows remote authenticated users to infer user password hashes through user-list sorting. The administrative users view accepts password as the sortby column and orders rows by stored hashes without restricting the field to displayed options. An account authorized to view users and repeated changes to a controlled user password are required; resulting row positions reveal hash characters.

CVSS severity2.7
Low
EPSS probability0.91%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in phpList 3.2.6 allows remote authenticated users to infer user password hashes through user-list sorting. The administrative users view accepts password as the sortby column and orders rows by stored hashes without restricting the field to displayed options. An account authorized to view users and repeated changes to a controlled user password are required; resulting row positions reveal hash characters.

The record

CVE
CVE-2017-20031
Published
Jun 10, 2022
Updated
Apr 15, 2025
Vendor
phpList
Product
phpList
Classifications
CWE-200, T1555
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jun 10, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

phpList · phpListversion=3.2.6

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
2.7VulDBCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1555Credentials from Password Stores

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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