{"cve":"CVE-2026-55585","nvd":{"published":"2026-08-25T17:17:32.903","modified":"2026-09-09T21:07:31.353","status":"Deferred","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-94"],"references":["https://github.com/QWED-AI/qwed-verification/commit/6066b68c0c4f4cc2c3771824822aaa864d082ef8","https://github.com/QWED-AI/qwed-verification/commit/dc9d4db72ca4b4ae3f96d0e6a0c27a9e38a06f61","https://github.com/QWED-AI/qwed-verification/pull/200","https://github.com/QWED-AI/qwed-verification/security/advisories/GHSA-q27q-98j4-9pfv","https://github.com/QWED-AI/qwed-verification/security/advisories/GHSA-q27q-98j4-9pfv"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-55585","score":0.00775,"percentile":0.55795,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-q27q-98j4-9pfv","url":"https://osv.dev/vulnerability/GHSA-q27q-98j4-9pfv","summary":"qwed Vulnerable to Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`","modified":"2026-09-10T12:25:35.711764402Z","packages":[{"ecosystem":"PyPI","name":"qwed","purl":"pkg:pypi/qwed","ranges":["<5.1.2"],"fixed":["5.1.2"]}]},{"id":"PYSEC-2026-3914","url":"https://osv.dev/vulnerability/PYSEC-2026-3914","summary":"qwed Vulnerable to Authenticated Remote Code Execution via Unsafe SymPy `parse_expr()`","modified":"2026-09-10T12:15:12.923838395Z","packages":[{"ecosystem":"PyPI","name":"qwed","purl":"pkg:pypi/qwed","ranges":["<5.1.2"],"fixed":["5.1.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}