CVE-2026-76238 stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep
Authenticated attackers can manipulate or view data across all tenants via the decay sweep endpoint in stigmem.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76238?
CVE-2026-76238 is a high-severity missing authorization vulnerability in eidetic-labs stigmem-node, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-76238?
2 open source packages ship an affected version, including stigmem-node.
| Package | Affected | Fixed in |
|---|---|---|
stigmem-node PyPI | All versions | 0.9.0a12 |
stigmem-node PyPI | All versions | 0.9.0a12 |
How do I fix CVE-2026-76238?
Upgrade stigmem-node to 0.9.0a12 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-76238 being exploited?
There is no known exploitation of CVE-2026-76238 in the wild and no public exploit code.
Sources
Also known as GHSA-6gqw-jqv7-v88m, GHSA-w3ff-rjv9-m452.