CVE-2026-4964 is a Server-Side Request Forgery (SSRF) vulnerability found in letta-ai letta version 0.16.4, specifically within the File URL Handler component's _convert_message_create_to_message function. This medium-severity flaw (CVSS 6.3) allows remote attackers with low privileges to trigger SSRF by manipulating the ImageContent argument, potentially impacting confidentiality, integrity, and availability. While the exploit has been publicly disclosed and may be used, there is no evidence of active exploitation, nor are there readily available exploit modules in common frameworks. Community attention is currently minimal, with only one mention, and the vendor has not responded to the disclosure.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
0.16.4CPE matchmatch criteria | cpe:2.3:a:letta:letta:0.16.4:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.