CVE-2026-81867

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4% (26th 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
9.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 9.4Exploit: 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 Deserialization of Untrusted Data vulnerability in the JavaScript Task in Google Cloud Application Integration versions prior to 2026-06-28 on Google Cloud Platform allows an authenticated user with standard permissions to run arbitrary code on the shared production servers using a specially crafted script bypassing param guards.

This vulnerability was patched on 28 June 2026, and no customer action is needed.

CVSS v3
9.4
EG Score
9.4CRITICALmedium confidence
EG Risk
42
EG Risk 42/100CISA 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
Severity94% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
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
0.4%
EPSS %ILE
26th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

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 total (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 30, 2026

Advisory Details (2)

Auto-updated Oct 2, 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-2026-065
generic

Security bulletins  |  Application Integration  |  Google Cloud Documentation

https://docs.cloud.google.com/application-integration/docs/security-bulletins#gcp-2026-065

Vendor Advisories for CVE-2026-81867(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 54× 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. 2026-10-04 08:33 UTCGHSA enrichment
  2. 2026-10-04 04:49 UTCGHSA enrichment
  3. 2026-10-04 01:06 UTCGHSA enrichment
  4. 2026-10-03 21:21 UTCGHSA enrichment
  5. 2026-10-03 17:37 UTCEG score recompute
  6. 2026-10-03 17:37 UTCGHSA enrichment
  7. 2026-10-03 14:26 UTCEPSS rescore
  8. 2026-10-03 13:54 UTCGHSA enrichment
  9. 2026-10-03 10:09 UTCGHSA enrichment
  10. 2026-10-03 06:26 UTCGHSA enrichment
  11. 2026-10-03 02:43 UTCGHSA enrichment
  12. 2026-10-02 23:00 UTCGHSA enrichment
  13. 2026-10-02 19:16 UTCEG score recompute
  14. 2026-10-02 19:16 UTCGHSA enrichment
  15. 2026-10-02 17:57 UTCEPSS rescore
  16. 2026-10-02 15:32 UTCGHSA enrichment
  17. 2026-10-02 11:46 UTCGHSA enrichment
  18. 2026-10-02 07:57 UTCGHSA enrichment
  19. 2026-10-02 04:13 UTCGHSA enrichment
  20. 2026-10-02 00:27 UTCGHSA enrichment
  21. 2026-10-01 20:44 UTCEG score recompute
  22. 2026-10-01 20:44 UTCGHSA enrichment
  23. 2026-10-01 19:50 UTCEPSS rescore
  24. 2026-10-01 17:00 UTCGHSA enrichment
  25. 2026-10-01 12:50 UTCGHSA enrichment
Show 29 more
  1. 2026-10-01 09:07 UTCGHSA enrichment
  2. 2026-10-01 05:24 UTCGHSA enrichment
  3. 2026-10-01 01:41 UTCGHSA enrichment
  4. 2026-09-30 21:58 UTCGHSA enrichment
  5. 2026-09-30 18:15 UTCEG score recompute
  6. 2026-09-30 18:15 UTCGHSA enrichment
  7. 2026-09-30 15:04 UTCEPSS rescore
  8. 2026-09-30 14:31 UTCEG score recompute
  9. 2026-09-30 14:31 UTCGHSA enrichment
  10. 2026-09-30 13:36 UTCEG score recompute
  11. 2026-09-30 13:35 UTCGHSA enrichment
  12. 2026-09-30 13:14 UTCGHSA enrichment
  13. 2026-09-30 09:30 UTCGHSA enrichment
  14. 2026-09-30 05:38 UTCGHSA enrichment
  15. 2026-09-30 01:54 UTCGHSA enrichment
  16. 2026-09-29 22:11 UTCGHSA enrichment
  17. 2026-09-29 17:26 UTCEG score recompute
  18. 2026-09-29 17:26 UTCGHSA enrichment
  19. 2026-09-29 13:36 UTCGHSA enrichment
  20. 2026-09-29 09:51 UTCGHSA enrichment
  21. 2026-09-29 06:07 UTCGHSA enrichment
  22. 2026-09-29 02:24 UTCGHSA enrichment
  23. 2026-09-28 22:40 UTCEG score recompute
  24. 2026-09-28 22:40 UTCGHSA enrichment
  25. 2026-09-28 18:56 UTCGHSA enrichment
  26. 2026-09-28 15:13 UTCGHSA enrichment
  27. 2026-09-28 11:29 UTCEG score recompute
  28. 2026-09-28 10:57 UTCEG score recompute
  29. 2026-09-28 10:57 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-81867?
CVE-2026-81867 is a critical vulnerability published on September 28, 2026. A Deserialization of Untrusted Data vulnerability in the JavaScript Task in Google Cloud Application Integration versions prior to 2026-06-28 on Google Cloud Platform allows an authenticated user with standard permissions to run arbitrary code on the shared production servers using a specially…
When was CVE-2026-81867 disclosed?
CVE-2026-81867 was first published on September 28, 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-2026-81867 actively exploited?
CVE-2026-81867 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (26th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-81867?
CVE-2026-81867 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-81867?
No fix for CVE-2026-81867 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-2026-81867 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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