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Back to active CVEs
High · CVSS 8.8CVE-2026-103484

pgvector buffer overflow in IVFFlat index build

Answer in brief

CVE-2026-103484 records a High severity (CVSS 8.8) vulnerability in pgvector buffer overflow in IVFFlat index build. The current sources do not mark it as known exploited. The current feed maps n/a/pgvector (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 1, 2026Updated Oct 1, 2026Source checked Oct 1, 2026First seen by HOL Oct 1, 2026Material review Oct 1, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps n/a/pgvector (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
n/a/pgvectorgeneric>=0 <0.8.70.8.7

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for n/a/pgvector.
  2. 2Review the reported fix. Update n/a/pgvector to 0.8.7 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 1, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 1, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

IVFFlat index build in pgvector before 0.8.7 allows a database user to write data out-of-bounds, which can lead to arbitrary code execution.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Out-of-bounds write in PeaZip PEA extractor allows code execution via a crafted .pea archiveAlso CWE-787
  • Wormhole.app SSRFSame generic ecosystem
  • Physical UART Access Leading to an Unauthenticated Root Shell in TP-Link Kasa EC70 and EC71Same generic ecosystem
  • Cadmos LTI exposure of sensitive information via debug modeSame generic ecosystem
  • Joyland AI hard-coded credentials for push notificationsSame generic ecosystem
  • Joyland AI WebView command injectionSame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787, CWE-1284
Source
CVE List V5
Source checked
Oct 1, 2026
References
2 linked sources
Open source record