CVE-2026-13165
Remote Code Execution in SzafirHost
Description
SzafirHost verifies the downloaded native library archive with one JarFile parser (reading the Central Directory) but extracts native libraries with JarInputStream parser (reading sequentially from local file headers). An attacker who controls the served archive can insert a malicious DLL/SO/DYLIB as a local-file-header entry between the last legitimate entry and the Central Directory, without adding it to the Central Directory. The signature verifier never sees the injected entry and accepts the archive as validly signed; the extractor reads it sequentially and writes the attacker library to the native temp directory with no hash check), while the archive-size check still passes. This can lead to remote code execution. This issue was fixed in version 1.2.2.
INFO
Published Date :
June 29, 2026, 2:16 p.m.
Last Modified :
Oct. 25, 2026, 9:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-13165
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | 4bb8329e-dd38-46c1-aafb-9bf32bcb93c6 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update SzafirHost to version 1.2.2 or later.
- Verify archive integrity checks.
- Review extraction logic for native libraries.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-13165.
| URL | Resource |
|---|---|
| https://cert.pl/posts/2026/06/CVE-2026-13165 | |
| https://www.elektronicznypodpis.pl/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-13165 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-13165
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-13165 vulnerability anywhere in the article.
-
cert.pl
Vulnerability in SzafirHost software
Vulnerability in SzafirHost software CVE ID CVE-2026-13165 Publication date 29 June 2026 Vendor Krajowa Izba Rozliczeniowa Product SzafirHost Vulnerable versions All before 1.2.2 Vulnerability type (C ... Read more
The following table lists the changes that have been made to the
CVE-2026-13165 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 25, 2026
Action Type Old Value New Value Added Translation Title: SzafirHost de Krajowa Izba Rozliczeniowa, Description: SzafirHost verifica el archivo de biblioteca nativa descargado con un analizador JarFile (leyendo el Directorio Central) pero extrae bibliotecas nativas con un analizador JarInputStream (leyendo secuencialmente desde las cabeceras de archivos locales). Un atacante que controla el archivo servido puede insertar una DLL/SO/DYLIB maliciosa como una entrada de cabecera de archivo local entre la última entrada legítima y el Directorio Central, sin añadirla al Directorio Central. El verificador de firmas nunca ve la entrada inyectada y acepta el archivo como válidamente firmado; el extractor la lee secuencialmente y escribe la biblioteca del atacante en el directorio temporal nativo sin verificación de hash), mientras que la verificación del tamaño del archivo sigue pasando. Esto puede llevar a ejecución remota de código. Este problema se solucionó en la versión 1.2.2. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 29, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-13165', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-29T13:58:08.681080Z'} -
New CVE Received by [email protected]
Jun. 29, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Krajowa Izba Rozliczeniowa', 'product': 'SzafirHost', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.2', 'versionType': 'semver'}], 'defaultStatus': 'unaffected'}] Added Description SzafirHost verifies the downloaded native library archive with one JarFile parser (reading the Central Directory) but extracts native libraries with JarInputStream parser (reading sequentially from local file headers). An attacker who controls the served archive can insert a malicious DLL/SO/DYLIB as a local-file-header entry between the last legitimate entry and the Central Directory, without adding it to the Central Directory. The signature verifier never sees the injected entry and accepts the archive as validly signed; the extractor reads it sequentially and writes the attacker library to the native temp directory with no hash check), while the archive-size check still passes. This can lead to remote code execution. This issue was fixed in version 1.2.2. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/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 Added CWE CWE-434 Added Reference https://cert.pl/posts/2026/06/CVE-2026-13165 Added Reference https://www.elektronicznypodpis.pl/