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Critical 9.3Published Jul 29, 2026

CVE-2026-18236Google-ADK Continuation Forgery

Updated under an hour ago ()

Does this affect you?

It affects Google-ADK. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

A vulnerability in the Agent Development Kit (ADK) allows for continuation forgery in tool confirmations. An attacker who is able to manipulate or inject events into the session history can execute unauthorized tools by forging a tool confirmation response. This is possible because the framework did not verify if the target tool was registered to the executing agent, did not validate if the tool actually required confirmation, and did not match the confirmation arguments against the original tool call event in the history.

CVSS
9.3 CRITICAL (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P
Weakness (CWE)
CWE-863
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
Google
NVD analysis
Awaiting Analysis
Record last updated
Jul 29, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Google Google-ADK
google:adk (from the name)
before 2.5.0
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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