SSRF (Server-Side Request Forgery) in datamodel-code-generator (CVE-2026-54691)
Summary
SSRF in datamodel-code-generator (CVE-2026-54691). Confidential information can be exposed externally. Exploitable via http.get_body. Mitigation: upgrade to 0.61.0 or later.
Original description
The description as published by the source.
Summary
datamodel-code-generator's built-in HTTP fetcher (http.get_body) issues an httpx.GET against any URL passed to --url (or reached via a redirect chain) with no allow-list, no deny-list, no IP/host validation, and follow_redirects=True. Loopback addresses, RFC1918 ranges, link-local (169.254.169.254 cloud metadata), unique-local IPv6 and any other network-accessible target are all reachable. The JSON/YAML response body is parsed as a schema and reflected into the generated .py source, exfiltrating the response to anyone with access to that file (commonly committed to a repository).
Details
Sink: src/datamodel_code_generator/http.py, get_body (lines 31–61, at tag 0.60.1 / commit a321547e):
def get_body(url, headers=None, ignore_tls=False,
query_parameters=None, timeout=DEFAULT_HTTP_TIMEOUT) -> str:
httpx = _get_httpx()
try:
response = httpx.get(
url,
headers=headers,
verify=not ignore_tls,
follow_redirects=True, # (A)
params=query_parameters,
timeout=timeout,
)
except Exception as e:
...
if response.status_code >= 400:
...
content_type = response.headers.get("content-type", "").lower()
if "text/html" in content_type:
raise SchemaFetchError(...) # (B) — only filter
return response.text # (C) → embedded in generated.py
- (A) follows re…
Source: GitHub Security Advisories (Global) NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-54691 has been found in datamodel-code-generator.
Attackers can target a specific entry point like http.get_body over the network to misuse the product.
Confidential information can be exposed externally. CVSS score: 8.2/10.
What to do: upgrade datamodel-code-generator to 0.61.0 or later.
If unsure, ask your IT team or search "datamodel-code-generator CVE-2026-54691" on the vendor's site.
CVE-2026-54691 (datamodel-code-generator) — CWE-918 / CVSS v3 8.2
Attack vector: remote (network-reachable) / unauthenticated
Attack surface: http.get_body / httpx.GET / get_body / a321547e
Patched: 0.61.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
SSRF (CWE-918) exists in datamodel-code-generator. Attackers reach the vulnerable code path via http.get_body without authentication.
Check the vendor advisory for the affected versions of datamodel-code-generator. Attack surface: http.get_body / httpx.GET / get_body / a321547e.
Severity: High (CVSS 8.2/10). Confidential information can be exposed externally.
Update to 0.61.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'datamodel-code-generator' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'datamodel-code-generator' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
datamodel-code-generatorを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade datamodel-code-generator to 0.61.0ステージング環境で 0.61.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- package github.com
- package pypi.org
- web github.com
- web github.com
- web github.com