CVE-2026-79310: n/a
webpy web.py 0.76 is vulnerable to server-side template injection (SSTI). The template engine can be tricked into executing attacker-controlled template code that built-in security checks are designed to reject. When an application precompiles templates from a directory the attacker can write to and later renders them through the precompiled template loader, the sandbox is bypassed and the attacker's code runs, resulting in arbitrary Python code execution and OS command execution on the server.
AI Analysis
Technical Summary
CVE-2026-79310 affects web.py 0.76 and involves a server-side template injection vulnerability. The issue arises when an application precompiles templates from a directory writable by an attacker. This allows the attacker to inject malicious template code that bypasses the sandbox protections, resulting in arbitrary Python code execution and OS command execution on the server. The vulnerability is rated with a CVSS 3.1 score of 8.5, indicating high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
Successful exploitation leads to arbitrary code execution on the server, including execution of OS commands. This compromises the confidentiality, integrity, and availability of the affected system, potentially allowing full control over the server environment.
Mitigation Recommendations
No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid precompiling templates from directories writable by untrusted users and restrict write permissions on template directories to trusted users only.
CVE-2026-79310: n/a
Description
webpy web.py 0.76 is vulnerable to server-side template injection (SSTI). The template engine can be tricked into executing attacker-controlled template code that built-in security checks are designed to reject. When an application precompiles templates from a directory the attacker can write to and later renders them through the precompiled template loader, the sandbox is bypassed and the attacker's code runs, resulting in arbitrary Python code execution and OS command execution on the server.
CVSS v3.1
Score 8.5high
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-79310 affects web.py 0.76 and involves a server-side template injection vulnerability. The issue arises when an application precompiles templates from a directory writable by an attacker. This allows the attacker to inject malicious template code that bypasses the sandbox protections, resulting in arbitrary Python code execution and OS command execution on the server. The vulnerability is rated with a CVSS 3.1 score of 8.5, indicating high severity with network attack vector, high impact on confidentiality, integrity, and availability, and requiring low privileges but high attack complexity.
Potential Impact
Successful exploitation leads to arbitrary code execution on the server, including execution of OS commands. This compromises the confidentiality, integrity, and availability of the affected system, potentially allowing full control over the server environment.
Mitigation Recommendations
No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, avoid precompiling templates from directories writable by untrusted users and restrict write permissions on template directories to trusted users only.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-25T00:00:00.000Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ab41f01f7a7c541062f1aa2
Added to database: 09/23/2026, 18:48:33 UTC
Last enriched: 09/23/2026, 19:02:39 UTC
Last updated: 09/24/2026, 03:40:20 UTC
Views: 8
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