CVE-2026-4964

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

A security vulnerability has been detected in letta-ai letta 0.16.4. This vulnerability affects the function _convert_message_create_to_message of the file letta/helpers/message_helper.py of the component File URL Handler. Such manipulation of the argument ImageContent leads to server-side request forgery. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-918

Affected software

Vendor	Product	Versions
letta-ai	letta	0.16.4

References

https://gist.github.com/YLChen-007/fde4d5ed6ac4aa876f73f8954c6214daExploit, Third Party Advisory
https://vuldb.com/?ctiid.353841Permissions Required, VDB Entry
https://vuldb.com/?id.353841Third Party Advisory, VDB Entry
https://vuldb.com/?submit.777645Exploit, Third Party Advisory, VDB Entry

Timeline

Published: Mar 27, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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