---
id: CVE-2026-76238
title: >-
  stigmem versions before 0.9.0a12 contain a broken object level authorization
  vulnerability in the decay sweep endpoint that allows authenticated attackers
  with write credentials for one tenant to execute decay operations affecting
  all te…
summary: >-
  stigmem versions before 0.9.0a12 contain a broken object level authorization
  vulnerability in the decay sweep endpoint that allows authenticated attackers
  with write credentials for one tenant to execute decay operations affecting
  all te…
severity: high
cwe:
  - CWE-863
vendor: stigmem-node
product: stigmem-node
affected:
  - stigmem-node < 0.9.0a12
patched:
  - stigmem-node 0.9.0a12
published: '2026-08-19'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-76238'
references:
  - url: >-
      https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-6gqw-jqv7-v88m
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/stigmem-before-0a12-cross-tenant-bola-via-decay-sweep
    label: disclosure@vulncheck.com
  - url: 'https://github.com/eidetic-labs/stigmem/pull/728'
  - url: 'https://github.com/eidetic-labs/stigmem'
tags:
  - nvd
  - osv
  - pip
epss: 0.00364
epssPercentile: 0.27488
aliases:
  - GHSA-6gqw-jqv7-v88m
ecosystem: pip
ingestedAt: '2026-08-20T19:23:05.202Z'
---

## Overview

stigmem versions before 0.9.0a12 contain a broken object level authorization vulnerability in the decay sweep endpoint that allows authenticated attackers with write credentials for one tenant to execute decay operations affecting all tenants. Attackers can submit POST requests to the decay sweep endpoint with ttl_seconds=0 to expire facts across all tenants, or use dry_run to obtain cross-tenant fact counts and existence information.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-76238)

Affected packages:

- `stigmem-node < 0.9.0a12`

Patched in:

- `stigmem-node 0.9.0a12`

Source: https://osv.dev/vulnerability/GHSA-6gqw-jqv7-v88m