CVE-2026-4644

HIGHPre-NVD 8.58.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 86% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this week
8.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.5Exploit: None knownExposed: 0

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

A Missing Authorization vulnerability in HTTP Connector in Google Cloud Integration Connectors versions prior to 2025-12-11 on Google Cloud Platform allows an authenticated user to escalate privileges and take over a Google Cloud Project using unauthorized service account attachment.

This vulnerability was patched on 11 December 2025, and no customer action is needed.

CVSS v3
8.5
EG Score
8.5(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: Track

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
Severity85% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
14%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 8, 2026

Advisory Details (1)

Auto-updated Sep 4, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Security bulletins  |  Cloud Customer Care  |  Google Cloud Documentation

https://docs.cloud.google.com/support/bulletins#gcp-2026-059

Vendor Advisories for CVE-2026-4644(2)

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 23× in last 7d / 54× 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. 2026-09-18 22:33 UTCEG score recompute
  2. 2026-09-18 22:33 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 09:33 UTCGHSA enrichment
  5. 2026-09-17 20:31 UTCEG score recompute
  6. 2026-09-17 20:31 UTCGHSA enrichment
  7. 2026-09-17 07:29 UTCGHSA enrichment
  8. 2026-09-16 18:29 UTCEG score recompute
  9. 2026-09-16 18:28 UTCGHSA enrichment
  10. 2026-09-16 14:08 UTCEPSS rescore
  11. 2026-09-16 05:15 UTCEPSS rescore
  12. 2026-09-16 05:14 UTCGHSA enrichment
  13. 2026-09-15 16:15 UTCGHSA enrichment
  14. 2026-09-15 03:15 UTCEG score recompute
  15. 2026-09-15 03:15 UTCGHSA enrichment
  16. 2026-09-14 14:15 UTCGHSA enrichment
  17. 2026-09-14 01:15 UTCEG score recompute
  18. 2026-09-14 01:15 UTCGHSA enrichment
  19. 2026-09-13 16:47 UTCEPSS rescore
  20. 2026-09-13 12:16 UTCGHSA enrichment
  21. 2026-09-12 23:16 UTCEG score recompute
  22. 2026-09-12 23:16 UTCGHSA enrichment
  23. 2026-09-12 10:15 UTCGHSA enrichment
  24. 2026-09-11 21:15 UTCEG score recompute
  25. 2026-09-11 21:15 UTCGHSA enrichment
Show 29 more
  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-11 08:15 UTCGHSA enrichment
  3. 2026-09-10 19:16 UTCEG score recompute
  4. 2026-09-10 19:15 UTCGHSA enrichment
  5. 2026-09-10 09:35 UTCEPSS rescore
  6. 2026-09-10 06:16 UTCGHSA enrichment
  7. 2026-09-09 17:16 UTCGHSA enrichment
  8. 2026-09-09 04:16 UTCEG score recompute
  9. 2026-09-09 04:16 UTCGHSA enrichment
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-08 15:16 UTCGHSA enrichment
  12. 2026-09-08 11:24 UTCGHSA enrichment
  13. 2026-09-07 22:24 UTCEG score recompute
  14. 2026-09-07 22:24 UTCGHSA enrichment
  15. 2026-09-07 16:01 UTCEPSS rescore
  16. 2026-09-07 09:23 UTCGHSA enrichment
  17. 2026-09-06 20:21 UTCEG score recompute
  18. 2026-09-06 20:21 UTCGHSA enrichment
  19. 2026-09-06 13:47 UTCEPSS rescore
  20. 2026-09-06 07:20 UTCGHSA enrichment
  21. 2026-09-05 18:20 UTCEG score recompute
  22. 2026-09-05 18:20 UTCGHSA enrichment
  23. 2026-09-05 05:20 UTCEG score recompute
  24. 2026-09-05 05:20 UTCGHSA enrichment
  25. 2026-09-04 16:20 UTCEG score recompute
  26. 2026-09-04 16:20 UTCGHSA enrichment
  27. 2026-09-04 11:19 UTCEG score recompute
  28. 2026-09-04 10:24 UTCEG score recompute
  29. 2026-09-04 10:23 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-4644?
CVE-2026-4644 is a high vulnerability published on September 4, 2026. A Missing Authorization vulnerability in HTTP Connector in Google Cloud Integration Connectors versions prior to 2025-12-11 on Google Cloud Platform allows an authenticated user to escalate privileges and take over a Google Cloud Project using unauthorized service account attachment. This…
When was CVE-2026-4644 disclosed?
CVE-2026-4644 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-4644 actively exploited?
CVE-2026-4644 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 86.4% of all scored CVEs.
What is the CVSS score of CVE-2026-4644?
CVE-2026-4644 has a CVSS v3 base score of 8.5 (NVD).
How do I remediate CVE-2026-4644?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4644, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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