Is CVE-2026-12879 in the CISA KEV catalog?

No. CVE-2026-12879 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-12879?

CVE-2026-12879 has a CVSS v4 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2026-12879?

CVE-2026-12879 has an EPSS score of 0.19% (9th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2026-12879?

No published fix for CVE-2026-12879 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2026-12879

MEDIUM

5.9

CVSS v4

NVD

Description

An Improper Input Validation vulnerability in BigQuery DAO in Google Cloud Apigee versions prior to 2026-06-12 on Google Cloud Platform allows an authenticated attacker to exfiltrate cross-tenant data. This vulnerability was patched on 12 June 2026 on the Apigee Servers, and no customer action is needed.

CWE-441 CWE-610

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v4 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredHigh

User InteractionNone

Impact

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Clear

Exploit Intelligence

0.19%probability of exploitation in 30 days

9thpercentile

Low risk: more likely to be exploited than 9% of all known CVEs.

References

Other references1

cloud.google.com

Related Vulnerabilities

Other CWE-441 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-47269	High	8.3	36%	-	-
CVE-2019-3924	High	7.5	16%	-	Fix
CVE-2020-5412	Medium	6.5	10%	-	Fix
CVE-2019-3996	Medium	6.5	5.9%	-	-
CVE-2021-20042	Critical	9.8	2.7%	-	-
CVE-2019-1841	Medium	6.5	2.6%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-09.