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CVE-2022-4885
Path Traversal in jefferson (CVE-2022-4885)
Summary
path traversal in jefferson (CVE-2022-4885). Confidential information can be exposed externally. Mitigation: upgrade to `0.4` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2022-4885** has been found in jefferson.
Confidential information can be exposed externally. CVSS score: ?/10.
What to do: upgrade jefferson to **0.4** or later.
If unsure, ask your IT team or search "jefferson CVE-2022-4885" on the vendor's site.
CVE-2022-4885 (jefferson) — CWE-22 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `0.4` — 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.
❓ What is the problem
**Path traversal** (CWE-22) exists in jefferson.
📍 Affected scope
jefferson — .
🔥 Severity
Severity: ?. Confidential information can be exposed externally
🔧 How to fix
Update to **0.4**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'jefferson' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'jefferson' . | 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 `jefferson` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade jefferson to 0.4ステージング環境で 0.4 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
PyPI
jefferson
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.4"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2022-4885
- advisory https://github.com/advisories/GHSA-7jrw-p8jc-v6qw
- package https://github.com/sviehb/jefferson
- package https://pypi.org/project/jefferson
- web https://github.com/sviehb/jefferson/pull/36
- web https://github.com/sviehb/jefferson/commit/53b3f2fc34af0bb32afbcee29d18213e61471d87
- web https://github.com/sviehb/jefferson/releases/tag/v0.4
- web https://vuldb.com/?ctiid.218020
- web https://vuldb.com/?id.218020