CVE-2026-8934

Home/CVE/A Missing Authorization vulnerability in a GraphQL private API operation of the Google App Engine section of the Cloud C

CVE

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A Missing Authorization vulnerability in a GraphQL private API operation of the Google App Engine section of the Cloud C

A Missing Authorization vulnerability in a GraphQL private API operation of the Google App Engine section of the Cloud Console allows an unauthenticated remote attacker to leak sensitive App Engine request logs from other projects using a specially crafted request. This vulnerability was patched on 7 April 2026, and no customer action is needed.

Schedule remediation

SSVC automatable: yes - attacks can be scripted at scale
⚠ NVD has not scored this CVE yet - manual triage required (common for recent CVEs)

No Sigma yet — build one → YARA rules0

Look this up elsewhere - one-click external pivots

NVD CVE.org CISA Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

▸ How to read a CVE - triage first, then detect and patch

This page is every public fact about CVE-2026-8934, cross-linked. Its job is to answer one question fast - does this need my attention now? - and then hand you the two things you do about it. Here is how an analyst reads it.

Triage: should I act now? Four signals, and they are not interchangeable:

CVSSseverity - how bad it is IF exploited, 0-10. A high CVSS alone is not urgency; a flaw can be a perfect 10 and never actually be attacked. EPSSprobability - a model’s estimate of the chance it is exploited in the next 30 days, 0-1. This is the “will it actually happen” signal. CISA KEVconfirmed - it is being exploited in the wild right now. The strongest signal on the page; KEV beats any score. Weaponisedavailability - public exploits / PoCs, and especially Metasploit modules rated Excellent / Great. Reliable, packaged exploit code means low-skill attackers can use it today.

How they combine: KEV, or a dependable Metasploit module, means patch now regardless of CVSS. High CVSS + low EPSS + no exploit is real but not an emergency - schedule it. Low CVSS but KEV-listed still gets patched now. The verdict above already weighed these for you; this is how it got there.

Then what - two workflows:

Detectwhen you cannot patch today, follow this CVE to the ATT&CK techniques it enables, then Build a SIEM detection (the green button) - author a rule, test it in Atomic, deploy it. That buys visibility while the patch waits. PatchAffected products / packages tell you if you are exposed; Fixed versions by distribution and Vendor advisories give the exact version that closes it.

Reading order for the panels below: verdict + badges, then Public exploits / Metasploit (is it weaponised), then ATT&CK techniques + Sigma / IDS rules (can I detect it), then Affected products / packages + Fixed versions (am I exposed, what patches it), then Threat actors / IOCs (who uses it), then Scoring & timeline / references (the evidence).

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Severity & exploitation scoring

EPSS exploitation probability

n/a

No EPSS score in our data for this CVE. EPSS is published daily for scored CVEs - a very new, reserved, or rejected CVE may not have one yet.

CVSS metric silhouette

No structured CVSS vector for this CVE. Older entries often have only a numeric base score - the metric breakdown radar requires a full AV:_/AC:_/... vector string published by NVD.

SSVC triage · cisa-vulnrichment

Exploitation

none

Automatable

yes

Tech impact

partial

Attack path

Full kill chain

→

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ATT&CK techniques

Techniques this CVE enables. Pills with a solid outline are high confidence - named directly in ATT&CK or Nuclei, or human-curated by CTID; the rest are inferred from the weakness type using MITRE's CVE Mapping Methodology and the CWE → CAPEC chain. Broad, generic-weakness guesses are filtered out. A small N× marks a technique that N independent sources agree on.

T1211 · Exploitation for Stealth T1542.002 · Component Firmware T1556 · Modify Authentication Process

▤ Build a SIEM detection for these techniques

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CAPEC attack patterns

Attack patterns this CVE enables - the bridge from weakness to ATT&CK technique.

CAPEC-CAPEC-665 · Exploitation of Thunderbolt Protection Flaws

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Weakness Classification

CWE-862Missing Authorization

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Related CVEs

CVEs linked to this one by a shared weakness (CWE) or affected product - joins on data already in the engine, with the reason shown per row. Not a guess.

CVE-2005-3623 nfs2acl.c in the Linux kernel 2.6.14.4 does not check for MAY_SATTR privilege be... same CWE-862 CVE-2006-4483 The cURL extension files (1) ext/curl/interface.c and (2) ext/curl/streams.c in ... same CWE-862 CVE-2008-6548 The rst parser (parser/text_rst.py) in MoinMoin 1.6.1 does not check the ACL of ... same CWE-862 CVE-2009-2282 The Virtual Network Terminal Server daemon (vntsd) for Logical Domains (aka LDom... same CWE-862

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References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

https://docs.cloud.google.com/support/bulletins#gcp-2026-038