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CVE-2026-42208 CISA KEV critical CVSS 9.8

[KEV] SQL Injection in Berriai litellm (CVE-2026-42208)

Summary

SQL injection in Berriai litellm (CVE-2026-42208). Successful exploitation can lead to full system takeover. Exploitable via `POST /chat/completions`. Listed in CISA KEV — actively exploited. Mitigation: upgrade to `>=1.83.7` or later.

AI summary openai / gpt-4o

A vulnerability in BerriAI LiteLLM allows unauthorized access to its database, risking data theft. This issue occurs during API key verification, making it crucial for users to update their systems. If immediate update is not possible, a temporary setting change can mitigate the risk.
BerriAI LiteLLM has a SQL injection vulnerability in the `POST /chat/completions` endpoint where the `Authorization` header is used during API key verification. This allows attackers to read or modify the database. Affected versions are from `1.81.16` to `<1.83.7`, with a fix in `1.83.7`. As a workaround, set `disable_error_logs: true` in `general_settings`. CVSS score is 9.8, indicating remote exploitability and no user interaction required. Discovered by Tencent YunDing Security Lab.
❓ What is the problem
SQL injection vulnerability in BerriAI LiteLLM's API key verification process.
📍 Affected scope
Affects `POST /chat/completions` endpoint using the `Authorization` header.
🔥 Severity
Critical (CVSS score 9.8) indicating remote exploitability without requirements for authentication or user interaction.
🔧 How to fix
Upgrade to version 1.83.7 or later.
🛡️ Workaround
Set `disable_error_logs: true` in `general_settings`.
🔍 Detection
Monitor for unusual manipulation of the `Authorization` header data in logs.

Related past incidents Similar incidents extracted from past CVEs

Another significant SQL injection vulnerability affecting authorization processes in similar systems.
Example of a SQL injection vulnerability exploited via an API header.
Historical highlight of the impact SQL injection can have on large systems.

If this happens at your company Expected impact per business scenario

📌 In a B2B SaaS environment where BerriAI LiteLLM powers critical business logic processing.
Unauthorized read/write access to databases leading to sensitive business data exposure.
📌 In systems handling personally identifiable information (PII) for third-party clients.
Potential breach of PII, leading to regulatory fines and damage to client trust.
📌 In an internal IT infrastructure using LLM APIs for operations.
Compromised infrastructure that leads to operational disruptions and data leaks.
Recommended action
Immediate upgrade to patched version 1.83.7 and review error logging configurations.

Response Actions (7 steps)

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify
    grep -r 'litellm' . | 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 `litellm` を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Match against affected range verify
    Confirm if version satisfies `>=1.81.16, <1.83.7`

    Step 1 で見つかったバージョンが影響範囲 `>=1.81.16, <1.83.7` に該当するか照合。本番で稼働中ならインシデント扱い。

  3. 3
    Hunt for indicators of compromise detect
    grep 'POST /chat/completions' /var/log/nginx/access.log | grep -E '(unusual_payload|sqli_pattern)'

    アクセスログで `POST /chat/completions` への異常なリクエスト (不正な認証ヘッダ・SQLメタ文字)を過去 30〜90日分捜索。WAF/SIEM があれば該当パスのアラート発火履歴を確認。

  4. 4
    Consider incident declaration escalate
    Notify SOC / on-call

    CISA KEV登録済 = 実環境で悪用が観測されている。Step 3 で兆候があればインシデント対応宣言、無くてもパッチ適用までWAF強化を最優先で。

  5. 5
    Apply temporary workaround mitigate
    set `disable_error_logs: true` under `general_settings`.

    パッチが適用されるまでの応急処置として、set `disable_error_logs: true` under `general_settings`. を実施。回避策の副作用 (機能低下) を確認した上で。

  6. 6
    Apply patch patch
    Upgrade litellm to >=1.83.7

    ステージング環境で >=1.83.7 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。

  7. 7
    Post-deployment verification verify
    Replay attack against POST /chat/completions on staging to confirm patch closes the vector

    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

pip litellm
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.83.7"}]}]
PyPI litellm
[{"type":"ECOSYSTEM","events":[{"introduced":"1.81.16"},{"fixed":"1.83.7"}]}]

References

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