Vulnerability · Published Aug 19, 2026 · Assigned by VulnCheck
CVE-2026-76243stigmem before 0.9.0a2 Authentication Bypass via Disabled Auth
Critical 9.2
In plain English
A critical-severity security flaw in stigmem 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 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)9.2Critical
Exploit odds (30 days)0.6%top 52.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
stigmem versions before 0.9.0a2 allow unauthenticated access when authentication is disabled on non-loopback deployments. Attackers can perform read, write, and federation operations with anonymous identity when nodes are exposed outside local development environments.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | stigmem-node | 0.9.0a2 | GHSA-fp6w-8wpg-74g5 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| eidetic-labs | stigmem | 0 – before 0.9.0a2 |
Weakness: CWE-285 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- GitHub Security Advisory (GHSA-fp6w-8wpg-74g5) vendor-advisory
- VulnCheck Advisory: stigmem before 0.9.0a2 Authentication Bypass via Disabled Auth third-party-advisory