How severe is CVE-2026-31923?

CVE-2026-31923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-31923 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-31923?

CVE-2026-31923 affects Apache Apisix. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-31923?

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

Does CVE-2026-31923 have an EU (EUVD) identifier?

Yes. CVE-2026-31923 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22239.

When was CVE-2026-31923 published?

CVE-2026-31923 was published on 2026-04-14 and last updated on 2026-06-17.

CVE-2026-31923

CVE-2026-31923 is a high-severity vulnerability in Apache Apisix with a CVSS 3.x base score of 7.5. 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-319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-22239
Weakness: CWE-319
Affected product: Apache Apisix
Published: 2026-04-14
Last modified: 2026-06-17

Description

Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. This can occur due to `ssl_verify` in openid-connect plugin configuration being set to false by default. This issue affects Apache APISIX: from 0.7 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the issue.

Frequently asked questions

What is CVE-2026-31923?: Cleartext Transmission of Sensitive Information vulnerability in Apache APISIX. This can occur due to `ssl_verify` in openid-connect plugin configuration being set to false by default. This issue affects Apache APISIX: from 0.7 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the issue.
How severe is CVE-2026-31923?: CVE-2026-31923 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-31923 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-31923?: CVE-2026-31923 affects Apache Apisix. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-31923?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-31923 have an EU (EUVD) identifier?: Yes. CVE-2026-31923 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-22239.
When was CVE-2026-31923 published?: CVE-2026-31923 was published on 2026-04-14 and last updated on 2026-06-17.

References

Affected products (1)

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

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