Cloud

CVE-2026-81867

Authenticated RCE via JS Task deserialization in Google Cloud Application Integration (patched).

Major vulnerability. Critical authenticated RCE in Google Cloud Application Integration — a widely used managed GCP service; could enable tenant/server compromise and attract broad attention.

CVSS: 9.4Criticalscored by the publisher (CNA)
Exploited in the wild: Not knownnot in CISA KEV as of our last sync
EPSS: 0.36%chance of exploitation in the next 30 daystop 71% of scored CVEsFIRST score of 12 Nov 2026
Fix: Patch availablesee the advisories in the references
Published: 28 Sept 2026analysed here 28 Sept 2026

Summary

Impact

Authenticated users can execute arbitrary code on shared production servers via crafted JavaScript Task deserialization, risking RCE, data exposure, and tenant compromise.

Triage

Attack surface: Server-side
Exploitable: At runtime
Attack vector: network
Weakness: CWE-502 Insecure Deserialization
Can a WAF block it?: Partly. See why

The summary, impact and action text on this page are written by our AI analysis pipeline, or taken from the NVD description when a CVE was imported from NVD. They are not the vendor's wording: check them against the sources. A longer AI executive summary and technical analysis are generated for signed-in accounts on the Max plan.

Affected products

Product	Affected versions	Vendor says fixed in
Google Cloud Application Integration	< 2026-06-28Vendor says fixed in: not stated	Not stated by the vendor

As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.

Products named in our analysis

Google Cloud Application Integration (JavaScript Task) versions < 2026-06-28

Fix and mitigation

Action required

Monitor only

WAF and other mitigations

Can a WAF block it? Partly. Insecure deserialization payloads can be built from many different gadget chains, so WAF signatures only catch the known ones.

Also consider: allow-list classes · patch

Based on the weakness type only; no CVE-specific evidence yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.

Remediation steps (AI-written)

Step-by-step remediation is generated for accounts on the Max plan, for CVEs that match a technology in their stack. Add this technology to your stack to see the fix checklist.

Exploitation evidence

CISA KEV catalog: Not listed as of our last sync.
Public exploit code: None on record in Exploit-DB, Metasploit, Nuclei templates or PoC-in-GitHub.
CISA SSVC: exploitation none, automatable no, technical impact totalAssessed by CISA 30 Sept 2026 (SSVC 2.0.3). Exploitation is none, poc (public proof of concept) or active.

Timeline

28 Sept 2026Published
28 Sept 2026Analysed by vulneraibility.comsame day later
30 Sept 2026CISA SSVC assessment: exploitation none2 days later
30 Sept 2026CVE record last updatedsame day later

Common questions

Is CVE-2026-81867 being exploited?

Not confirmed. CVE-2026-81867 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.

How severe is CVE-2026-81867?

CVE-2026-81867 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.

Is there a patch for CVE-2026-81867?

Yes. A fix has been recorded for CVE-2026-81867. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.

What does CVE-2026-81867 affect?

CVE-2026-81867 affects Google Cloud Application Integration (JavaScript Task) versions < 2026-06-28. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.

What should I do about CVE-2026-81867?

Confirm Google's patch applied; review audit logs for suspicious activity.

Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.

References

NVD CVE.org CVE Details Source

2 references in the CVE record, grouped by the tags the record gives them.

Where the data on this page comes from

CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
NVD: CVSS and CPE data
CISA Vulnrichment (ADP): SSVC decision points
FIRST EPSS: exploit probability and percentile

Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.

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