CVE-2026-49231
Apache APISIX: Identity spoofing issue in APISIX opa plugin
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Apache APISIX: Identity spoofing issue in APISIX opa plugin
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.
- Record
CVE-2026-49231- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - Weakness
- CWE-290
- Updated
- 2026-11-02
EUVDEUVD-2026-38020
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.
- Record
EUVD-2026-38020- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3cm7-pvjf-2x7q
Authentication Bypass by Spoofing vulnerability in opa plugin. An attacker could relay spoofed...
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.
- Record
GHSA-3cm7-pvjf-2x7q- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/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:X - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-49231- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/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:X - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N - Weakness
- CWE-290
- Updated
- 2026-11-02
OSV
Apache APISIX: Identity spoofing issue in APISIX opa plugin
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.
- Record
CVE-2026-49231- CVSS 4.0
- 2.3 Low
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N - Weakness
- CWE-290
- Updated
- 2026-11-02
OSVBIT-apisix-2026-49231 No score
Apache APISIX: Identity spoofing issue in APISIX opa plugin
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.
- Record
BIT-apisix-2026-49231- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
apisixBitnami |
3.5.0 up to 3.18.0 | 3.18.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-49231 is a low vulnerability (CVSS 2.3) in Apache Apisix, published June 19, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.57%, the 47th percentile. Fixed in apisix 3.18.0.