# CVE-2026-110971: Weak password encoding in Płatnik

Status: published. Published: 2026-10-30. Updated: 2026-11-03.

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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Zakład Ubezpieczeń Społecznych / Płatnik: ≥ 0; ≤ 10.02.002 (affected, custom); unaffected at metric 334. Source: CNA: CERT-PL

## Severity and prioritization

- CVSS 4.0: 7.7 (high); 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; source: CNA: CERT-PL

- CVSS 4.0: 7.7 (high); 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/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; source: NVD: cvd@cert.pl

- CISA KEV: No listing in collected sources

- EPSS: 0.17% as of 2026-11-02; percentile 6.36%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-261

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://cert.pl/posts/2026/10/CVE-2026-110970 (CNA: CERT-PL; third-party-advisory)

- https://www.zus.pl/firmy/program-platnik/o-programie-platnik (CNA: CERT-PL; product)

- https://cert.pl/posts/2026/10/CVE-2026-110970 (cvd@cert.pl)

- https://www.zus.pl/firmy/program-platnik/o-programie-platnik (cvd@cert.pl)

## Provenance

- CNA: CERT-PL: https://www.cve.org/CVERecord?id=CVE-2026-110971; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110971; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-110971; retrieved 2026-11-03; source updated Not reported

Revision: dc71bdeead985bb651a7dd9d6a93a214cc4c6f7fe31b5d9c06db025ed068bc89

Canonical: https://y2.dev/cve/CVE-2026-110971

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