Out-of-bounds Read in Pgpointcloud Pointcloud
CVE-2026-100387
pgPointcloud through 1.2.5 contains a heap out-of-bounds read vulnerability in dimensional patch WKB deserialization that allows authenticated database users to read adjacent heap memory. Attackers can supply crafted pcpatch values with attacker-controlled size fields to copy heap memory into stored patches for exfiltration or crash the PostgreSQL backend.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 25.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Issue #387 (issue-tracking)
- github.com/pgpointcloud/pointcloud/pull/388 (issue-tracking, patch)
- github.com/pgpointcloud/pointcloud/blob/v1.2.5/lib/pc_bytes.c (technical-description)
- github.com/pgpointcloud/pointcloud (product)
- VulnCheck Advisory: pgPointcloud through 1.2.5 heap out-of-bounds read via WKB deserialization (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100387?
- CVE-2026-100387 is a high-severity vulnerability in Pgpointcloud Pointcloud, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-09-25.
- How severe is CVE-2026-100387?
- High severity. CVSS v3 base score is 8.1 out of 10.