---
id: CVE-2026-110971
title: Weak password encoding in Płatnik
summary: "Use of a weak password encoding algorithm in Płatnik software allows a user who obtains\_encoded password to easily decode it.\_\n\n\nThis issue was fixed in metric 334\_in version 10.02.002."
severity: high
cvss: 7.7
cvssVector: 'CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-261
vendor: Zakład Ubezpieczeń Społecznych
product: Płatnik
affected:
  - Płatnik <= 10.02.002
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-30T15:30:23.448311Z'
published: '2026-10-30'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T09:13:15.367Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-110971'
references:
  - url: 'https://cert.pl/posts/2026/10/CVE-2026-110970'
  - url: 'https://www.zus.pl/firmy/program-platnik/o-programie-platnik'
tags:
  - cve.org
epss: 0.0017
epssPercentile: 0.06427
ingestedAt: '2026-11-05T19:30:42.934Z'
---

## Overview

Use of a weak password encoding algorithm in Płatnik software allows a user who obtains encoded password to easily decode it. 


This issue was fixed in metric 334 in version 10.02.002.

## Affected

- `Płatnik <= 10.02.002`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.