CVE-2026-104635
- Source
- https://cve.org/CVERecord?id=CVE-2026-104635
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104635.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-104635
- Aliases
-
- EEF-CVE-2026-104635
- GHSA-m497-c2h9-rvw6
- Published
- 2026-10-09T08:17:52Z
- Modified
- 2026-10-11T02:46:19Z
- Severity
-
- 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Uncontrolled recursion in elixir-protobuf/protobuf JSON decoding of self-referential messages
- Details
-
Uncontrolled Recursion vulnerability in Protobuf.JSON.Decode in elixir-protobuf protobuf allows an unauthenticated remote attacker to crash the decoding process via a deeply nested JSON document. Any application that decodes attacker-supplied JSON with Protobuf.JSON.decode/3, Protobuf.JSON.decode!/3, or Protobuf.JSON.from_decoded/3 into a schema that contains a self-referential or cyclic message type is affected.
In lib/protobuf/json/decode.ex, the embedded-message clause of decode_singular/3 recurses into internal_from_json_data/3 once per nesting level without incrementing or checking the decoder's depth counter. The depth guard increase_depth_and_maybe_throw/1 covers only the Google.Protobuf.ListValue and Google.Protobuf.Struct clauses, so the recursion_limit option has no effect on user-defined message types. Each nesting level allocates a stack frame and heap objects, and a sufficiently deep document exhausts the memory of the decoding process. Confidentiality and integrity are not affected.
This issue affects protobuf: from 0.8.0 before 0.17.1.
- Database specific
{ "cna_assigner": "EEF", "cwe_ids": [ "CWE-674" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104635.json" }- References
-
- https://cna.erlef.org/cves/CVE-2026-104635.html
- https://github.com
- https://osv.dev/vulnerability/EEF-CVE-2026-104635
- https://repo.hex.pm
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104635.json
- https://github.com/elixir-protobuf/protobuf/security/advisories/GHSA-m497-c2h9-rvw6
- https://nvd.nist.gov/vuln/detail/CVE-2026-104635
- https://github.com/elixir-protobuf/protobuf/commit/b0a1d4eaffaf50012fa71a8e931a47cf252d0370
- https://github.com/elixir-protobuf/protobuf/commit/e9432ad1c4099511905353cebcececa3a1f7c3ff
- https://github.com/elixir-protobuf/protobuf