TI-2026-82528 Aliases CVE-2026-93570 GHSA-rcqp-vfhx-g87h

XML external entity injection in Szafir and Szafir Weryfikująca

LOW 35CWE-611Published 2026-10-29 · Updated 2026-11-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-611 and the CVSS impact.

Summary

Szafir through 2.0.0 and Szafir Weryfikująca through 1.0 from Krajowa Izba Rozliczeniowa are affected. The XML parser processes external entities in crafted XML files that contain a DOCTYPE with an external DTD reference (CWE-611). An attacker can read arbitrary files from the victim's filesystem if a user signs or verifies a crafted XML file.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

Szafir and Szafir Weryfikująca are vulnerable to XML External Entity (XXE) injection. When a user signs or verify a crafted XML file containing a `DOCTYPE` with an external DTD reference, the parser processes external entities, allowing an attacker to read arbitrary files from the victim's filesystem. This issue was fixed in Szafir version 2.0 build 708. Szafir Weryfikująca is no longer supported (End of Life) and has not been fixed.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00278 20th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Krajowa Izba Rozliczeniowa	Szafir	up to 2.0.0	—	No fix listed	CNA
Krajowa Izba Rozliczeniowa	Szafir Weryfikująca	up to 1.0	—	No fix listed	CNA

Szafir VendorKrajowa Izba Rozliczeniowa Affected up to 2.0.0 Fixed in — No fix listed CNA
Szafir Weryfikująca VendorKrajowa Izba Rozliczeniowa Affected up to 1.0 Fixed in — No fix listed CNA

Remediation

Update Szafir to version 2.0 build 708, which fixes the issue. Szafir Weryfikująca is no longer supported (End of Life) and has not been fixed.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-29 Threatist record created from CVE-2026-93570
2026-10-29 Alias added: GHSA-rcqp-vfhx-g87h
2026-10-31 Priority changed: MEDIUM → LOW
2026-11-05 CISA SSVC decision points changed
2026-11-06 Affected versions changed · Red Hat
2026-11-06 CVSS score added · Red Hat

References

Advisory 1

https://cert.pl/posts/2026/10/CVE-2026-93570

Other 1

https://www.elektronicznypodpis.pl/

TI-2026-07960 Improper Certificate Verification in Szafir SDK CVSS 4.0CRITICAL 9.3
TI-2026-21415 Lack of Dynamic Library Validation in SzafirHost CVSS 4.0HIGH 8.7
TI-2026-32104 Remote Code Execution in SzafirHost CVSS 4.0HIGH 8.6
TI-2026-11178 Remote Code Execution in SzafirHost CVSS 4.0HIGH 8.6
TI-2026-82552 Szafir accepts unvalidated TLS certificates for update downloads CVSS 4.0MEDIUM 6.9
TI-2026-21414 URL (HTTP Origin) call location spoofing in Szafir SDK Web CVSS 4.0MEDIUM 5.1

See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences