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stigmem-node EUVDEUVD-2026-62404

| CVE-2026-76240 HIGH
SQL Injection (CWE-89)
2026-08-19 VulnCheck GHSA-vgv8-r42h-hgr6
SQLi PostgreSQL Stigmem
7.5
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.5 HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
6.6 MEDIUM

Operator-level schema configuration control mandates PR:H; AT:P specific conditions map to AC:H; scope unchanged as no lateral system impact is indicated.

3.1 AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
Aug 19, 2026 - 15:17 EUVD
Source Code Evidence Fetched
Aug 19, 2026 - 14:38 vuln.today
Analysis Generated
Aug 19, 2026 - 14:38 vuln.today
CVE Published
Aug 19, 2026 - 14:02 cve.org
HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

SQL injection in stigmem-node 0.9.0a1 stems from PostgreSQL schema identifiers being interpolated into SQL strings without defensive identifier quoting. Operators using the Postgres backend in affected versions are directly impacted; the CVSS 4.0 vector (PR:H, AT:P) reflects that the current vulnerable code path requires operator-level control over schema configuration, though the unsafe pattern creates latent risk if schema names are ever derived from tenant or request input. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Gain operator deployment access
Delivery
Inject malicious SQL payload into schema name config
Exploit
Trigger Postgres backend operation in stigmem-node
Execution
Exploit unquoted identifier interpolation in SQL string
Persist
Execute arbitrary SQL with session privileges
Impact
Exfiltrate or modify database contents
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Vulnerability AssessmentAI

Exploitation Exploitation requires operator-level privilege to control the PostgreSQL schema name configured for the stigmem-node Postgres backend (PR:H per CVSS 4.0 vector). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 score of 7.5 is appropriately calibrated given the PR:H and AT:P metrics: exploitation requires operator-level access to configure schema names, and specific conditions must be present beyond baseline deployment. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An operator with write access to the stigmem-node deployment configuration injects a crafted PostgreSQL identifier - for example, a schema name containing a closing double-quote followed by appended SQL statements - into the schema setting. When stigmem-node interpolates that value unquoted into a SQL string for the Postgres backend, the injected payload executes arbitrary SQL with the privileges of the database session, enabling data exfiltration or modification. …
Remediation Vendor-released patch: 0.9.0a2. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all stigmem-node 0.9.0a1 deployments using Postgres backend. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-62404 vulnerability details – vuln.today
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