CVE-2026-100387— pgPointcloud through 1.2.5 heap out-of-bounds read via WKB deserialization
Quick assessment
Affected
pgpointcloud pointcloud
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
pgPointcloud 1.2.5 及之前版本存在一个堆缓冲区越界读取漏洞，该漏洞出现在对维数补丁 WKB（Well-Known Binary）进行反序列化的过程中。具有认证权限的数据库用户可以通过此漏洞读取相邻的堆内存。攻击者可以通过构造恶意 pcpatch 值，并利用其控制的尺寸字段，将堆内存内容复制到存储的补丁中，从而进行数据外泄或导致 PostgreSQL 后端崩溃。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local System
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I. Basic Information for CVE-2026-100387
Vulnerability Information
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Vulnerability Title
pgPointcloud through 1.2.5 heap out-of-bounds read via WKB deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| pgpointcloud | pointcloud | 0 ~ 1.2.5 | - |
|
II. Public POCs for CVE-2026-100387
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-100387 (1)
Other References for CVE-2026-100387 (4)
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https://github.com/pgpointcloud/pointcloud/blob/v1.2.5/lib/pc_bytes.c#L1347-L1373 technical-description
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https://github.com/pgpointcloud/pointcloud/issues/387 issue-tracking
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V. Comments for CVE-2026-100387
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