CVE-2026-81867: Deserialization of Untrusted Data in Application Integration allows Remote Code Execution
- Is it exploited?
Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of . If CISA adds it, this page shows it as known exploited.
- How likely is exploitation in the next 30 days?
- 0.4%
EPSS score, percentile 29.2 of all scored records. A probability estimated by FIRST, not a report of exploitation.
- How severe?
- 9.4 Critical
CVSS v4.0 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Affected
- before 2026-06-28
Source: CISA KEV 2026.10.29, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
What to do
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | before 2026-06-28 |
Versions not listed are: unaffected.
Source: CVE List, as of . About the data.
About this vulnerability
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…
Summary: CVE record, as of .
- CISA has not added CVE-2026-81867 to its Known Exploited Vulnerabilities (KEV) catalog, as of 29 Oct 2026.
- The CVE record was published on 28 Sep 2026.
- The CVE record carries a CVSS v4.0 base score of 9.4 (Critical), given by its CNA.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 0.4% (percentile 29.2), as of 29 Oct 2026. EPSS is a statistical estimate, not a report of exploitation.
- CISA's SSVC assessment in the CVE record: exploitation none, automatable no, technical impact total.
Source: CISA KEV 2026.10.29, as of ; CVE List, as of ; FIRST EPSS, as of . About the data.
Description
Deserialization of Untrusted Data in Application Integration allows Remote Code Execution
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.
Source: CVE List, as of . About the data.
Weakness
CWE-502, 1 CAPEC
- CWE-502: Deserialization of Untrusted Data
Attack patterns (CAPEC)
- CAPEC-253: Remote Code Execution
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
2
Known exploited Google vulnerabilities
- CVE-2026-111497: Google Brotli Unchecked Return Value Vulnerability
- CVE-2026-58704: Google Pixel Improper Authorization Vulnerability
- CVE-2026-87491: Google Chromium V8 Out of Bounds Write Vulnerability
- CVE-2026-85046: Google Chromium V8 Type Confusion Vulnerability
- CVE-2026-11645: Google Chromium V8 Out-of-Bounds Read and Write Vulnerability