Eval Injection Affecting letta package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-LETTA-15874391
- published2 Apr 2026
- disclosed27 Mar 2026
- creditUnknown
Introduced: 27 Mar 2026
CVE-2026-4965 (opens in a new tab)How to fix?
There is no fixed version for letta.
Overview
letta is a Create LLM agents with long-term memory and custom tools
Affected versions of this package are vulnerable to Eval Injection via the resolve_type() function. An attacker can execute arbitrary code by supplying crafted input that is improperly neutralized before being evaluated.
Note
This issue is due to incomplete fix for CVE-2025-6101.