CVE-2026-4965 (GCVE-0-2026-4965)

Vulnerability from cvelistv5 – Published: 2026-03-27 17:41 – Updated: 2026-03-27 22:07
VLAI
Title
letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection
Summary
A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolve_type of the file letta/functions/ast_parsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
7.3 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-95 - Improper Neutralization of Directives in Dynamically Evaluated Code
  • CWE-94 - Code Injection
Assigner
References
URL Tags
https://vuldb.com/?id.353842 vdb-entrytechnical-description
https://vuldb.com/?ctiid.353842 signaturepermissions-required
https://vuldb.com/?submit.777654 third-party-advisory
https://gist.github.com/YLChen-007/fc09bc447a73bb… exploit
Impacted products
Vendor Product Version
letta-ai letta Affected: 0.16.4
    cpe:2.3:a:letta:letta:*:*:*:*:*:*:*:*
 Create a notification for this product.
Credits
Eric-z (VulDB User) VulDB
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.