Dashboard / CVE-2026-39998

CVE-2026-39998

MEDIUM
MEDIUM Priority: 0.04 BB Relevance: 62/100
Published: 2026-06-19 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: Present
VC: None
VI: None
VA: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
apache apisix 2.12.0 – 3.17.0

References & Advisories (2)

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.8 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/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

EPSS — Exploitation Probability

0.68%
Raw Score 0.006760
Percentile 52.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00676
2026-10-28
0.00676

Intelligence Sources

nvd ref →

External Links