CVE-2026-4964
A security vulnerability has been detected in letta-ai letta 0.16.4.
Does this matter?
Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 2.1 LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- letta/letta
- Source
- cna@vuldb.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.