CVE-2026-49231 — MEDIUM (5.4)

Q: How severe is CVE-2026-49231?

CVE-2026-49231 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-49231?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Apisix.

Vulnerability Description

Authentication Bypass by Spoofing vulnerability in opa plugin. An attacker could relay spoofed identity headers to upstream capitalising on non-default configuration in opa plugin. This could allow the attacker to assume higher privileges on the upstream service. This issue affects Apache APISIX: from 3.5.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Apache	Apisix	>= 3.5.0, < 3.17.0

Related Weaknesses (CWE)

CWE-290

References

https://lists.apache.org/thread/s1jd1vxm59p6ghx47xhmpjdk1cobo4hnVendor AdvisoryMailing List
http://www.openwall.com/lists/oss-security/2026/06/19/13Third Party Advisory

FAQ

What is CVE-2026-49231?

CVE-2026-49231 is a vulnerability with a CVSS score of 5.4 (MEDIUM). Authentication Bypass by Spoofing vulnerability in opa plugin. An attacker could relay spoofed identity headers to upstream capitalising on non-default configuration in opa plugin. This could allow ...

How severe is CVE-2026-49231?

CVE-2026-49231 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-49231?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Apisix.