CVE-2026-100387

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-09-25. A secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.1EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.1Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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.

CVSS v3
8.1
EG Score
8.1HIGHhigh confidence
EG Risk
37
EG Risk 37/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
23rd
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 25, 2026

Last Modified

September 30, 2026

Advisory Details (5)

Auto-updated Sep 25, 2026
No patch confirmed yet. Sources: github_pr.
generic

pgPointcloud through 1.2.5 heap out-of-bounds read via WKB deserialization | Advisories | VulnCheck

https://www.vulncheck.com/advisories/pgpointcloud-through-1.2.5-heap-out-of-bounds-read-via-wkb-deserialization
generic

GitHub - pgpointcloud/pointcloud: A PostgreSQL extension for storing point cloud (LIDAR) data. · GitHub

https://github.com/pgpointcloud/pointcloud
generic

pointcloud/lib/pc_bytes.c at v1.2.5 · pgpointcloud/pointcloud · GitHub

https://github.com/pgpointcloud/pointcloud/blob/v1.2.5/lib/pc_bytes.c#L1347-L1373
github_pr

Fix heap out-of-bounds read in dimensional pcpatch WKB parsing

Upstream fix in progress (PR #388 · pgpointcloud/pointcloud, state=open)

https://github.com/pgpointcloud/pointcloud/pull/388
generic

Heap out-of-bounds read in dimensional pcpatch WKB deserialization · Issue #387 · pgpointcloud/pointcloud · GitHub

https://github.com/pgpointcloud/pointcloud/issues/387

Vendor Advisories for CVE-2026-100387(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 30× in last 7d / 41× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-05 00:26 UTCEG score recompute
  2. 2026-10-05 00:26 UTCGHSA enrichment
  3. 2026-10-04 23:21 UTCEPSS rescore
  4. 2026-10-04 11:42 UTCGHSA enrichment
  5. 2026-10-03 23:00 UTCEG score recompute
  6. 2026-10-03 23:00 UTCGHSA enrichment
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 10:17 UTCGHSA enrichment
  9. 2026-10-02 21:34 UTCEG score recompute
  10. 2026-10-02 21:34 UTCGHSA enrichment
  11. 2026-10-02 08:52 UTCGHSA enrichment
  12. 2026-10-01 20:08 UTCEG score recompute
  13. 2026-10-01 20:07 UTCGHSA enrichment
  14. 2026-10-01 19:49 UTCEPSS rescore
  15. 2026-10-01 07:23 UTCGHSA enrichment
  16. 2026-09-30 18:41 UTCEG score recompute
  17. 2026-09-30 18:41 UTCGHSA enrichment
  18. 2026-09-30 17:38 UTCEG score recompute
  19. 2026-09-30 17:38 UTCGHSA enrichment
  20. 2026-09-30 16:17 UTCEG score recompute
  21. 2026-09-30 16:17 UTCGHSA enrichment
  22. 2026-09-30 15:02 UTCEPSS rescore
  23. 2026-09-30 03:01 UTCEG score recompute
  24. 2026-09-30 03:01 UTCGHSA enrichment
  25. 2026-09-29 15:20 UTCEPSS rescore
Show 16 more
  1. 2026-09-29 14:19 UTCGHSA enrichment
  2. 2026-09-29 01:37 UTCEG score recompute
  3. 2026-09-29 01:37 UTCGHSA enrichment
  4. 2026-09-28 13:50 UTCEPSS rescore
  5. 2026-09-28 12:55 UTCGHSA enrichment
  6. 2026-09-28 00:13 UTCEG score recompute
  7. 2026-09-28 00:13 UTCGHSA enrichment
  8. 2026-09-27 11:30 UTCGHSA enrichment
  9. 2026-09-26 22:46 UTCEG score recompute
  10. 2026-09-26 22:46 UTCGHSA enrichment
  11. 2026-09-26 15:58 UTCEPSS rescore
  12. 2026-09-26 10:04 UTCEG score recompute
  13. 2026-09-26 10:03 UTCGHSA enrichment
  14. 2026-09-25 21:19 UTCEG score recompute
  15. 2026-09-25 20:24 UTCEG score recompute
  16. 2026-09-25 20:24 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-100387?
CVE-2026-100387 is a high vulnerability published on September 25, 2026. 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…
When was CVE-2026-100387 disclosed?
CVE-2026-100387 was first published on September 25, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-100387 actively exploited?
CVE-2026-100387 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (23rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-100387?
CVE-2026-100387 has a CVSS base score of 8.1 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-100387?
No fix for CVE-2026-100387 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-100387 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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