CVE-2026-77936
letta-ai letta
- letta-ai letta
- Critical
- CVSS 9.3
- EPSS 0.47%
- No fixed version listed
What to do
No fixed version listed
Affected products
| Product | Affected | Fixed in |
|---|---|---|
| letta-ai letta | through 0.16.8 | None listed |
Advisories and fixes
- Public exploit www.lasso.security
Scores and signals
- Exploitation
- No known exploitation
- Severity
- Critical, CVSS 9.3 (v4.0, scored by VulnCheck)
- EPSS
- 0.47% chance of exploitation in the next 30 days (EPSS from FIRST, as of Oct 24, 2026)
- CISA's SSVC decision points
- Exploitation: proof of concept. Automatable: yes. Technical impact: total. As of Oct 20, 2026.
- Weakness
- CWE-1188: Initialization of a Resource with an Insecure Default
- Vendor
- letta-ai, letta
Timeline
- First listed as critical by cve.now. Affected and fixed versions come from the CVE record, once one is published.