letta vulnerabilities and fixes

Recent CVEs affecting letta, with upgrade or downgrade steps. 2 tracked.

letta has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 0. Most recent: 2026-03-27. Highest priority: CVE-2026-4965 (score 48/100).

• CVE-2026-4965 HIGH 7.3 DOWNGRADE A vulnerability was detected in letta-ai letta 0.16.4
• CVE-2026-4964 MEDIUM 6.3 DOWNGRADE A security vulnerability has been detected in letta-ai letta 0.16.4

FAQ

How do I fix letta vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is letta being exploited right now?

None of the tracked letta CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which letta CVE should I patch first?

CVE-2026-4965 currently ranks highest (48/100): A vulnerability was detected in letta-ai letta 0.16.4.

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