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CVE-2026-4965

A vulnerability was detected in letta-ai letta 0.16.4. This issue affects the function resolve_type of the file letta/functions/ast_parsers.py of the component Incomplete Fix CVE-2025-6101. Performing a manipulation results in improper neutralization of directives in dynamically evaluated code. The attack can be initiated remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0370a093515856f5b41b40543c4148f21d0fed3d33b40c20ba561e8b914784f1
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 4 assertions

{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/0/cvssV4_0

{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/2/cvssV3_0

{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/1/cvssV3_1

{"metric":{"baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/3/cvssV2_0
cwe · 2 assertions

{"cweId":"CWE-95","description":"Improper Neutralization of Directives in Dynamically Evaluated Code","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"Code Injection","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:letta:letta:*:*:*:*:*:*:*:*"],"modules":["Incomplete Fix CVE-2025-6101"],"product":"letta","vendor":"letta-ai","versions":[{"status":"affected","version":"0.16.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/affected/0

Provider-owned CVSS observations

4 source assertions
{"metric":{"baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/0/cvssV4_0
{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.0"},"metric_type":"cvssV3_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/2/cvssV3_0
{"metric":{"baseScore":7.3,"baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/1/cvssV3_1
{"metric":{"baseScore":7.5,"vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","version":"2.0"},"metric_type":"cvssV2_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/metrics/3/cvssV2_0

CWE assertions

2 source assertions
{"cweId":"CWE-95","description":"Improper Neutralization of Directives in Dynamically Evaluated Code","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-94","description":"Code Injection","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/problemTypes/1/descriptions/0

Source references

4 source assertions
{"tags":["exploit"],"url":"https://gist.github.com/YLChen-007/fc09bc447a73bba526c1642d9ce73ca5"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/references/3
{"name":"VDB-353842 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"],"url":"https://vuldb.com/?ctiid.353842"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/references/1
{"name":"VDB-353842 | letta-ai letta Incomplete Fix CVE-2025-6101 ast_parsers.py resolve_type eval injection","tags":["vdb-entry","technical-description"],"url":"https://vuldb.com/?id.353842"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/references/0
{"name":"Submit #777654 | letta-ai letta 0.16.4 CWE-95","tags":["third-party-advisory"],"url":"https://vuldb.com/?submit.777654"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:adc0528ed8685335d9b5b5263d72fb1e96ab79bf9f0d8cb09d7d354a40262d93 · sha256:de43983a81505918… · /containers/cna/references/2

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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