CVE-2026-4965 | letta-ai letta 0.16.4 Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection

VDB-353842 · CVE-2026-4965 · GCVE-100-353842 LETTA-AI LETTA 0.16.4 INCOMPLETE FIX CVE-2025-6101 AST_PARSERS.PY RESOLVE_TYPE EVAL INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.6 $0-$5k 2.64+ Summaryinfo A vulnerability was found in letta-ai letta 0.16.4. It has been declared as critical. Impacted is the function resolve_type of the file letta/functions/ast_parsers.py of the component Incomplete Fix CVE-2025-6101. Executing a manipulation can lead to eval injection. This vulnerability is tracked as CVE-2026-4965. The attack can be launched remotely. Moreover, an exploit is present. The vendor was contacted early about this disclosure but did not respond in any way. Detailsinfo A vulnerability was found in letta-ai letta 0.16.4. It has been declared as critical. This vulnerability affects the function resolve_type of the file letta/functions/ast_parsers.py of the component Incomplete Fix CVE-2025-6101. The manipulation with an unknown input leads to a eval injection vulnerability. The CWE definition for the vulnerability is CWE-95. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes code syntax before using the input in a dynamic evaluation call (e.g. "eval"). As an impact it is known to affect confidentiality, integrity, and availability. The advisory is available at gist.github.com. This vulnerability was named CVE-2026-4965. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. It is possible to download the exploit at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way. There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Productinfo Type Artificial Intelligence Software Vendor letta-ai Name letta Version 0.16.4 CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.3 VulDB Meta Temp Score: 6.6 VulDB Base Score: 7.3 VulDB Temp Score: 6.6 VulDB Vector: 🔒 VulDB Reliability: 🔍 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: Eval injection CWE: CWE-95 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Access: Public Status: Proof-of-Concept Download: 🔒 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 03/27/2026 Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Advisory: gist.github.com Status: Not defined CVE: CVE-2026-4965 (🔒) GCVE (CVE): GCVE-0-2026-4965 GCVE (VulDB): GCVE-100-353842 scip Labs: https://www.scip.ch/en/?labs.20161013 Entryinfo Created: 03/27/2026 09:28 Updated: 03/27/2026 09:30 Changes: 03/27/2026 09:28 (45), 03/27/2026 09:30 (15) Complete: 🔍 Submitter: Eric-z Cache ID: 99:3FE:101 Submitinfo Accepted Submit #777654: letta-ai letta 0.16.4 CWE-95 (by Eric-z) Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸