How severe is CVE-2026-44087?

CVE-2026-44087 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-44087 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-44087?

CVE-2026-44087 affects Apache Apisix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-44087?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-44087 have an EU (EUVD) identifier?

Yes. CVE-2026-44087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38017.

When was CVE-2026-44087 published?

CVE-2026-44087 was published on 2026-06-19 and last updated on 2026-06-23.

CVE-2026-44087

CVE-2026-44087 is a critical-severity vulnerability in Apache Apisix with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v4: 5.3
EPSS exploit prediction: 0% (12th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-38017
Weakness: CWE-345
Affected product: Apache Apisix
Published: 2026-06-19
Last modified: 2026-06-23

Description

Insufficient Verification of Data Authenticity vulnerability in Apache APISIX. The openid-connect plugin under default configuration has an attack surface that allows the attacker to spoof identity headers allowing the attacker to get unauthorized access the protected resources. This issue affects Apache APISIX: from 2.3 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

Frequently asked questions

What is CVE-2026-44087?: Insufficient Verification of Data Authenticity vulnerability in Apache APISIX. The openid-connect plugin under default configuration has an attack surface that allows the attacker to spoof identity headers allowing the attacker to get unauthorized access the protected resources. This issue affects Apache APISIX: from 2.3 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.
How severe is CVE-2026-44087?: CVE-2026-44087 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-44087 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (12th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-44087?: CVE-2026-44087 affects Apache Apisix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-44087?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-44087 have an EU (EUVD) identifier?: Yes. CVE-2026-44087 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-38017.
When was CVE-2026-44087 published?: CVE-2026-44087 was published on 2026-06-19 and last updated on 2026-06-23.

References

Affected products (1)

cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*

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