Details of VAR-202606-3919

ID

VAR-202606-3919

CVE

CVE-2026-39998

TITLE

Apache Software Foundation of APISIX Input verification vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2026-020794

DESCRIPTION

Improper Input Validation vulnerability in Apache APISIX. The attacker can take advantage of certain configuration in forward-auth plugin to spoof identity headers. This issue affects Apache APISIX: from 2.12.0 through 3.16.0. Users are recommended to upgrade to version 3.17.0, which fixes the issue. 3.17.0 It is recommended to upgrade to .- All information handled by the software may be leaked to external parties. - All information handled by the software may be overwritten. - The software may completely shut down

Trust: 1.62

sources: NVD: CVE-2026-39998 // JVNDB: JVNDB-2026-020794

AFFECTED PRODUCTS

vendor:	apache	model:	apisix	scope:	lt	version:	3.17.0	Trust: 1.0
vendor:	apache	model:	apisix	scope:	gte	version:	2.12.0	Trust: 1.0
vendor:	apache	model:	apisix	scope:	eq	version:	-	Trust: 0.8
vendor:	apache	model:	apisix	scope:	eq	version:	2.12.0 that's all 3.17.0	Trust: 0.8
vendor:	apache	model:	apisix	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2026-020794 // NVD: CVE-2026-39998

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2026-39998
value:	HIGH
Trust: 1.0
security@apache.org:	CVE-2026-39998
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2026-39998
value:	HIGH
Trust: 0.8

nvd@nist.gov:	CVE-2026-39998
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2026-39998
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2026-020794 // NVD: CVE-2026-39998 // NVD: CVE-2026-39998

PROBLEMTYPE DATA

problemtype:	CWE-20	Trust: 1.0
problemtype:	Inappropriate input confirmation (CWE-20) [ others ]	Trust: 0.8

sources: JVNDB: JVNDB-2026-020794 // NVD: CVE-2026-39998

PATCH

title:

Apache APISIX

url:

https://lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvv

Trust: 0.8

sources: JVNDB: JVNDB-2026-020794

EXTERNAL IDS

db:	NVD	id:	CVE-2026-39998	Trust: 2.6
db:	OPENWALL	id:	OSS-SECURITY/2026/06/19/4	Trust: 1.0
db:	JVNDB	id:	JVNDB-2026-020794	Trust: 0.8

sources: JVNDB: JVNDB-2026-020794 // NVD: CVE-2026-39998

REFERENCES

url:	http://www.openwall.com/lists/oss-security/2026/06/19/4	Trust: 1.0
url:	https://lists.apache.org/thread/vgkvy396010d7g6m0jrn4d3hjf2svlvv	Trust: 1.0
url:	https://nvd.nist.gov/vuln/detail/cve-2026-39998	Trust: 0.8

sources: JVNDB: JVNDB-2026-020794 // NVD: CVE-2026-39998

SOURCES

db:	JVNDB	id:	JVNDB-2026-020794
db:	NVD	id:	CVE-2026-39998

LAST UPDATE DATE

2026-06-26T23:26:56.698000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2026-020794	date:	2026-06-26T02:46:00
db:	NVD	id:	CVE-2026-39998	date:	2026-06-23T14:57:13.603

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2026-020794	date:	2026-06-26T00:00:00
db:	NVD	id:	CVE-2026-39998	date:	2026-06-19T14:16:21.823