{"cve":"CVE-2026-0994","nvd":{"published":"2026-01-23T15:16:06.840","modified":"2026-09-01T13:18:07.523","status":"Modified","description":"A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages.\n\nDue to missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply nested Any structures that bypass the intended recursion limit, eventually exhausting Python’s recursion stack and causing a RecursionError.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","score":8.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-674"],"references":["https://github.com/protocolbuffers/protobuf/pull/25239","https://access.redhat.com/errata/RHSA-2026:16174","https://access.redhat.com/errata/RHSA-2026:3059","https://access.redhat.com/errata/RHSA-2026:3094","https://access.redhat.com/errata/RHSA-2026:3095"],"products":["google:protobuf"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-0994","score":0.00712,"percentile":0.53609,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7gcm-g887-7qv7","url":"https://osv.dev/vulnerability/GHSA-7gcm-g887-7qv7","summary":"protobuf affected by a JSON recursion depth bypass","modified":"2026-09-10T03:50:32.795512159Z","packages":[{"ecosystem":"PyPI","name":"protobuf","purl":"pkg:pypi/protobuf","ranges":[">=6.30.0rc1 <6.33.5"],"fixed":["6.33.5"]},{"ecosystem":"PyPI","name":"protobuf","purl":"pkg:pypi/protobuf","ranges":["<5.29.6"],"fixed":["5.29.6"]}]},{"id":"PYSEC-2026-1805","url":"https://osv.dev/vulnerability/PYSEC-2026-1805","summary":"protobuf affected by a JSON recursion depth bypass","modified":"2026-07-07T17:48:07.140464416Z","packages":[{"ecosystem":"PyPI","name":"protobuf","purl":"pkg:pypi/protobuf","ranges":["<5.29.6",">=6.30.0rc1 <6.33.5"],"fixed":["5.29.6","6.33.5"]}]}],"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."]}