CVE-2026-77936

waiting for further signals

GHSA-g524-hhf9-5x95 ↗EUVD-2026-104692 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

letta-ai letta <= 0.16.8

CWE-1188 Initialization of a Resource with an Insecure Default

ETK-2026-2111, permanent identifier

pkg:pypi/letta

cvss9.3cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

1d 09h 14msince last run

1h 34mAI analysis

timeline

0 = trigger signal

trigger signal (cve.org) +0hwaiting for further signals+2h17m

+4h

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description

Letta deployments through 0.16.8 that use the bundled Compose configuration may expose APIs without authentication and configure PostgreSQL with default privileged credentials. An unauthenticated remote attacker who can reach the exposed services may perform administrative actions or execute code.

mitigation

Enable LETTA_SERVER_SECURE, replace default database credentials, and restrict PostgreSQL access to trusted networks. Treat the bundled Compose deployment as exposed until these settings are applied; no fixed package release is recorded.

check

exploit

automation

–

auth required

EPSS

0.47%39th percentile

agent run time

1h 34m

cve.org record, t = 0

2026-10-20 00:46Z

Δ to public poc

–

Δ to kev

–

outcome

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

2026-10-20 00:46Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-77936

this entry in the feed

GET /api/v1/feed/CVE-2026-77936

{
  "etk_id": "ETK-2026-2111",
  "cve_id": "CVE-2026-77936",
  "display_id": "CVE-2026-77936",
  "ghsa_id": "GHSA-g524-hhf9-5x95",
  "euvd_id": "EUVD-2026-104692",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing authentication in Letta Compose deployments",
  "summary": "Letta deployments through 0.16.8 that use the bundled Compose configuration may expose APIs without authentication and configure PostgreSQL with default privileged credentials. An unauthenticated remote attacker who can reach the exposed services may perform administrative actions or execute code.",
  "mitigation": "Enable `LETTA_SERVER_SECURE`, replace default database credentials, and restrict PostgreSQL access to trusted networks. Treat the bundled Compose deployment as exposed until these settings are applied; no fixed package release is recorded.",
  "vendor": "letta-ai",
  "product": "letta",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 0, <= 0.16.8"
      ],
      "ecosystem": "pypi",
      "fixed_versions": [],
      "package_name": "letta",
      "purl": "pkg:pypi/letta"
    }
  ],
  "cwes": [
    1188
  ],
  "cvss_score": 9.3,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0047,
  "epss_percentile": 0.3937,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 94.1227742,
  "t0_at": "2026-10-20T00:46:14.144000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-20T00:46:14.144000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-20T00:46:14.144000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-77936"
    }
  }
}

published 2026-10-20 01:28Z
last change 2026-10-21 11:52Z

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