{"answers":{"affected":"3 open source packages ship an affected version, including datamodel-code-generator. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55391 exists.","fix":"Upgrade datamodel-code-generator to 0.63.0 or later.","what":"CVE-2026-55391 is a high-severity server-side request forgery vulnerability in koxudaxi datamodel-code-generator, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55391 and fix it if it is affected.\n\nWhat it is: CVE-2026-55391 is a high-severity server-side request forgery vulnerability in koxudaxi datamodel-code-generator, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55391 exists.\n\nAffected packages and fixed versions:\n- datamodel-code-generator (PyPI): affected all versions; fixed in 0.63.0\n- datamodel-code-generator (PyPI): affected all versions; fixed in 0.63.0\n- datamodel-code-generator (PyPI): affected all versions; fixed in 0.63.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55391/ (Markdown: https://insights.sbomify.com/CVE-2026-55391/index.md)","id":"CVE-2026-55391","markdown":"https://insights.sbomify.com/CVE-2026-55391/index.md","name":"CVE-2026-55391","record":{"aliases":["GHSA-vx7x-vcc2-c44g","MINI-x22q-928f-qm5g","PYSEC-2026-3565"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Python code generator","requires_auth":"none","summary":"Attackers can bypass SSRF protections via DNS rebinding to access internal services when using datamodel-code-generator to fetch remote schemas.","user_interaction":"not_required","vuln_class":"ssrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"datamodel-code-generator","vendor":"koxudaxi"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-918","name":"Server-Side Request Forgery"},{"id":"CWE-367","name":"Time-of-check Time-of-use (TOCTOU) Race Condition"},{"id":"CWE-350","name":"Reliance on Reverse DNS Resolution for a Security-Critical Action"}],"description":"datamodel-code-generator generates Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON, YAML, or CSV. Prior to 0.63.0, datamodel-code-generator validates a URL host once in src/datamodel_code_generator/http.py through get_body, _validate_url_for_fetch, and _get_ips_from_host, but then lets httpx resolve the host again for the connection, allowing DNS rebinding to bypass allow_private_network=False and reach internal services. This issue is fixed in version 0.63.0.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"datamodel-code-generator vulnerable to SSRF protection bypass via DNS rebinding","id":"CVE-2026-55391","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"ssrf","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"NILFS utilities - Undefined Behavior and Out-of-Memory via Unvalidated s_log_block_size","id":"CVE-2026-55392"},"packages":[{"ecosystem":"PyPI","fixed":["0.63.0"],"introduced":["0"],"last_affected":[],"package":"datamodel-code-generator","purl":null,"source":"GHSA-vx7x-vcc2-c44g"},{"ecosystem":"PyPI","fixed":["0.63.0"],"introduced":["0"],"last_affected":[],"package":"datamodel-code-generator","purl":"pkg:pypi/datamodel-code-generator","source":"GHSA-vx7x-vcc2-c44g"},{"ecosystem":"PyPI","fixed":["0.63.0"],"introduced":["0"],"last_affected":[],"package":"datamodel-code-generator","purl":"pkg:pypi/datamodel-code-generator","source":"PYSEC-2026-3565"}],"prev":{"headline":"Arbitrary local file read via XSD `schemaLocation` (`xs:include`/`xs:import`) path traversal, with no remote-ref gate","id":"CVE-2026-55390"},"products":["datamodel-code-generator"],"published":"2026-07-28","related":[{"cvss_score":8.8,"headline":"`datamodel-code-generator` vulnerable to code injection in via attacker-controlled `default_factory` schema field","id":"CVE-2026-54653","kev_date_added":null,"published":"2026-07-28"},{"cvss_score":8.2,"headline":"datamodel-code-generator vulnerable to SSRF via JSON-Schema `$ref` to HTTP URL (silent by default)","id":"CVE-2026-54690","kev_date_added":null,"published":"2026-07-28"},{"cvss_score":7.8,"headline":"`datamodel-code-generator` vulnerable to code execution on import via unescaped `validators` entries in --extra-template-data","id":"CVE-2026-54656","kev_date_added":null,"published":"2026-07-28"},{"cvss_score":7.5,"headline":"datamodel-code-generator vulnerable to arbitrary local file read via JSON-Schema `$ref` (`file://` and `../` traversal), bypassing `--no-allow-remote-refs`","id":"CVE-2026-55389","kev_date_added":null,"published":"2026-07-28"},{"cvss_score":7.5,"headline":"datamodel-code-generator vulnerable to code injection via `x-python-import` / `customTypePath` in generated import statements","id":"CVE-2026-55415","kev_date_added":null,"published":"2026-07-28"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-29","vendors":["koxudaxi"]},"summary":"Attackers can bypass SSRF protections via DNS rebinding to access internal services when using datamodel-code-generator to fetch remote schemas.","url":"https://insights.sbomify.com/CVE-2026-55391/"}