CVE-2026-40217 | BerriAI LiteLLM test_custom_code unprotected alternate channel

VDB-356821 · CVE-2026-40217 · GCVE-0-2026-40217 BERRIAI LITELLM TEST_CUSTOM_CODE UNPROTECTED ALTERNATE CHANNEL HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.6 $0-$5k 1.62+ Summaryinfo A vulnerability has been found in BerriAI LiteLLM bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f and classified as critical. This vulnerability affects unknown code of the file /guardrails/test_custom_code. This manipulation causes unprotected alternate channel. This vulnerability is handled as CVE-2026-40217. The attack can be initiated remotely. There is not any exploit available. Detailsinfo A vulnerability was found in BerriAI LiteLLM bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f. It has been declared as critical. Affected by this vulnerability is an unknown part of the file /guardrails/test_custom_code. The manipulation with an unknown input leads to a unprotected alternate channel vulnerability. The CWE definition for the vulnerability is CWE-420. The product protects a primary channel, but it does not use the same level of protection for an alternate channel. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: LiteLLM through 2026-04-08 allows remote attackers to execute arbitrary code via bytecode rewriting at the /guardrails/test_custom_code URI. The advisory is shared at x41-dsec.de. This vulnerability is known as CVE-2026-40217 since 04/10/2026. The exploitation appears to be easy. The attack can be launched remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/10/2026). There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Vendor BerriAI Name LiteLLM Version bb0639701796218a3447160e55c0f1097446e4e6085df7dfd39f476d4143743f CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.6 VulDB Meta Temp Score: 7.6 VulDB Base Score: 6.3 VulDB Temp Score: 6.3 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.8 CNA Vector (MITRE): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Unprotected alternate channel CWE: CWE-420 / CWE-419 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: no mitigation known Status: 🔍 0-Day Time: 🔒 Timelineinfo 04/10/2026 Advisory disclosed 04/10/2026 +0 days CVE reserved 04/10/2026 +0 days VulDB entry created 04/10/2026 +0 days VulDB entry last update Sourcesinfo Advisory: x41-dsec.de Status: Not defined CVE: CVE-2026-40217 (🔒) GCVE (CVE): GCVE-0-2026-40217 GCVE (VulDB): GCVE-100-356821 Entryinfo Created: 04/10/2026 16:23 Changes: 04/10/2026 16:23 (61) Complete: 🔍 Cache ID: 99:167:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸