CVE-2026-81375

HIGHPre-NVD 8.38.3—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3% (22nd percentile of EPSS-scored CVEs). 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 — 4 sources updated this week
8.3EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 8.3Exploit: None knownExposed services: Not assessed

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

A Confused Deputy vulnerability in the EmailTask component in Google Cloud Application Integration versions prior to 2026-06-30 on Google Cloud Platform allows an authenticated attacker to read and exfiltrate arbitrary Google-internal files via a crafted attachment file path.

This vulnerability was patched on 30 June 2026, and no customer action is needed.

CVSS v3
8.3
EG Score
8.3HIGHmedium 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
Severity83% × 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
22nd
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 28, 2026

Last Modified

September 29, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic

Security bulletins  |  Application Integration  |  Google Cloud Documentation

https://docs.cloud.google.com/application-integration/docs/security-bulletins#gcp-2026-066
generic🔴 Active Exploitation

Security bulletins  |  Cloud Customer Care  |  Google Cloud Documentation

https://docs.cloud.google.com/support/bulletins#gcp-2026-066

Vendor Advisories for CVE-2026-81375(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 28× in last 7d / 28× 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. 2026-10-04 00:52 UTCEG score recompute
  2. 2026-10-04 00:52 UTCGHSA enrichment
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-03 12:40 UTCGHSA enrichment
  5. 2026-10-03 00:28 UTCEG score recompute
  6. 2026-10-03 00:28 UTCGHSA enrichment
  7. 2026-10-02 17:57 UTCEPSS rescore
  8. 2026-10-02 12:15 UTCGHSA enrichment
  9. 2026-10-02 00:02 UTCEG score recompute
  10. 2026-10-02 00:02 UTCGHSA enrichment
  11. 2026-10-01 19:50 UTCEPSS rescore
  12. 2026-10-01 10:53 UTCGHSA enrichment
  13. 2026-09-30 22:41 UTCEG score recompute
  14. 2026-09-30 22:41 UTCGHSA enrichment
  15. 2026-09-30 15:04 UTCEPSS rescore
  16. 2026-09-30 10:28 UTCGHSA enrichment
  17. 2026-09-29 22:11 UTCEG score recompute
  18. 2026-09-29 22:11 UTCGHSA enrichment
  19. 2026-09-29 14:49 UTCGHSA enrichment
  20. 2026-09-29 02:38 UTCEG score recompute
  21. 2026-09-29 02:38 UTCGHSA enrichment
  22. 2026-09-28 14:25 UTCEG score recompute
  23. 2026-09-28 14:25 UTCGHSA enrichment
  24. 2026-09-28 13:43 UTCEG score recompute
  25. 2026-09-28 13:43 UTCGHSA enrichment
Show 3 more
  1. 2026-09-28 11:29 UTCEG score recompute
  2. 2026-09-28 11:03 UTCEG score recompute
  3. 2026-09-28 11:02 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-81375?
CVE-2026-81375 is a high vulnerability published on September 28, 2026. A Confused Deputy vulnerability in the EmailTask component in Google Cloud Application Integration versions prior to 2026-06-30 on Google Cloud Platform allows an authenticated attacker to read and exfiltrate arbitrary Google-internal files via a crafted attachment file path. This vulnerability was…
When was CVE-2026-81375 disclosed?
CVE-2026-81375 was first published on September 28, 2026, with the most recent update on September 29, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-81375 actively exploited?
CVE-2026-81375 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (22nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81375?
CVE-2026-81375 has a CVSS base score of 8.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81375?
No fix for CVE-2026-81375 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-2026-81375 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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