CVE Catalog

CVE-2026-55585

HighCVSS 8.8
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.44%

37th percentile - higher than 37% of all known CVEs

Summary

QWED prior to 5.1.2 passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. The vulnerable paths are POST /verify/math and POST /verify/batch, which are protected only by a tenant API key, and account registration is enabled by default. This issue is fixed in version 5.1.2.

Risk Assessment

An attacker with a valid API key can execute arbitrary Python code on the server, potentially leading to file read/write, data modification, OS command execution, service termination, and compromise of other tenants in a shared deployment.

Recommendation

It is recommended to immediately upgrade QWED to version 5.1.2. Also, restrict access to account registration and API keys, and monitor traffic for suspicious requests to /verify/math and /verify/batch.

Related vulnerabilities

Original NVD description (English source)

QWED is open-source AI verification infrastructure for deterministic verification of LLM outputs, tool calls, code, schemas, and agent state before production execution. Prior to 5.1.2, the qwed package passes caller-controlled math expressions directly to SymPy parse_expr() without restricted global_dict and local_dict namespaces, allowing Python eval() to resolve builtins and execute arbitrary Python code in the API server process. In src/qwed_new/api/main.py, POST /verify/math is protected by get_current_tenant but accepts any valid tenant API key, reads the expression field, applies only a cosmetic re.sub(r'(\d)(()', r'\1*\2', expression) normalization, and passes the result to parse_expr(). In src/qwed_new/core/batch.py, POST /verify/batch sends math items through batch_service.create_job(), stores item.query verbatim, and _verify_item() passes VerificationType.MATH input to parse_expr() without sanitization. The default-enabled POST /auth/signup endpoint allows anyone to create a standard tenant account, POST /auth/api-keys issues an x-api-key, and either vulnerable path can then be used to read or write files, modify data, execute operating system commands, terminate the service, and compromise other tenants in a shared deployment. This issue is fixed in version 5.1.2.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS