Bug 2443037 (CVE-2026-3172)

Summary: CVE-2026-3172 pgvector: pgvector: Information disclosure or denial of service via buffer overflow in parallel HNSW index build
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: anpicker, bparees, dbosanac, dfreiber, drow, hasun, jburrell, jfula, jowilson, jreimann, jwong, mdessi, mrizzi, nyancey, omaciel, ometelka, pcattana, ptisnovs, syedriko, teagle, ttakamiy, vkumar, xdharmai
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in pgvector. A buffer overflow vulnerability in the parallel Hierarchical Navigable Small World (HNSW) index build process allows a database user to exploit this flaw. This can lead to the disclosure of sensitive data from other database relations or cause the database server to crash, resulting in a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-02-26 16:06:29 UTC
Buffer overflow in parallel HNSW index build in pgvector 0.6.0 through 0.8.1 allows a database user to leak sensitive data from other relations or crash the database server.