CVE-2026-123041

HIGH
MEDIUM Priority: 0.04 BB Relevance: 76/100
Published: 2026-11-10 Modified: 2026-11-13 First seen: 2026-11-10 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

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

Description

The request-callout plugin in Kong Gateway Enterprise and Kong AI Gateway omits callout headers not sent by the client from its cache key, allowing a cached callout response for a caller to be served to another.

Affected Software (12)

VendorProductVersion
Kong Inc. Kong AI Gateway 2.2.0 < 2.2.1
Kong Inc. Kong AI Gateway 2.2.0 < 2.2.1
Kong Inc. Kong Gateway Enterprise 3.10.0.0 < 3.10.0.20
Kong Inc. Kong Gateway Enterprise 3.13.0.0 < 3.13.0.12
Kong Inc. Kong Gateway Enterprise 3.14.0.0 < 3.14.0.17
Kong Inc. Kong Gateway Enterprise 3.15.0.0 < 3.15.0.7
Kong Inc. Kong Gateway Enterprise 3.16.0.0 < 3.16.0.2
Kong Inc. Kong Gateway Enterprise 3.10.0.0 < 3.10.0.20
Kong Inc. Kong Gateway Enterprise 3.13.0.0 < 3.13.0.12
Kong Inc. Kong Gateway Enterprise 3.14.0.0 < 3.14.0.17
Kong Inc. Kong Gateway Enterprise 3.15.0.0 < 3.15.0.7
Kong Inc. Kong Gateway Enterprise 3.16.0.0 < 3.16.0.2

Bug Bounty Relevance

76 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

8.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/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

EPSS — Exploitation Probability

0.45%
Raw Score 0.004450
Percentile 39.2%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00445
2026-11-12
0.00445

Intelligence Sources

mitre ref →
nvd ref →