Vulnerability · Published Aug 19, 2026 · Assigned by VulnCheck

CVE-2026-76238stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep

High 7.2

In plain English

A high-severity incorrect authorization in stigmem-node from eidetic-labs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)7.2High

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	stigmem-node	0.9.0a12	GHSA-6gqw-jqv7-v88m

Affected products (as reported)

Vendor	Product	Versions
eidetic-labs	stigmem-node	0 – before 0.9.0a12

Weakness: CWE-863 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N

References

GitHub Security Advisory (GHSA-6gqw-jqv7-v88m) vendor-advisory
VulnCheck Advisory: stigmem before 0.9.0a12 Cross-Tenant BOLA via decay sweep third-party-advisory