Kong Gateway Enterprise: Improper Neutralization of CRLF Sequences
CVE-2026-92441 is a high-severity improper neutralization of CRLF sequences vulnerability in Kong Gateway Enterprise from Kong, with a CVSS 4.0 base score of 7.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists versions 3.10.0.20, 3.13.0.12, 3.14.0.17 as the first without the flaw, so updating Kong Gateway Enterprise to one of those releases or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.37% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Kong Gateway Enterprise to 3.10.0.20 or 3.13.0.12 or 3.14.0.17 or 3.15.0.7, whichever matches your release line, or a later version.
- Update Kong AI Gateway to 2.2.1 or a later version.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Kong | Kong Gateway Enterprise | 3.10.0.0 up to, but not including, 3.10.0.20; 3.13.0.0 up to, but not including, 3.13.0.12; 3.14.0.0 up to, but not including, 3.14.0.17; 3.15.0.0 up to, but not including, 3.15.0.7; 3.16.0.0 up to, but not including, 3.16.0.2 | 3.10.0.20, 3.13.0.12, 3.14.0.17, 3.15.0.7, 3.16.0.2 |
| Kong | Kong AI Gateway | 2.2.0 up to, but not including, 2.2.1 | 2.2.1 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Attack requirements
- NoneThe attack does not depend on a particular deployment or configuration.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Confidentiality (vulnerable system)
- NoneNo loss of confidentiality on the vulnerable system.
- Integrity (vulnerable system)
- NoneNo loss of integrity on the vulnerable system.
- Availability (vulnerable system)
- NoneNo loss of availability on the vulnerable system.
- Confidentiality (other systems)
- HighSerious loss of confidentiality on systems beyond the vulnerable one.
- Integrity (other systems)
- HighSerious loss of integrity on systems beyond the vulnerable one.
- Availability (other systems)
- NoneNo loss of availability on systems beyond the vulnerable one.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/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. Scored by CNA.
Official description
Kong Gateway Enterprise and Kong AI Gateway include decoded CR/LF characters from the request path in the X-Forwarded-Prefix header on regex Routes, allowing HTTP header injection and request smuggling to the upstream.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of CRLF Sequences
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
How developers prevent this class of flaw
- Appropriately filter or quote CRLF sequences in user-controlled input.
More Improper Neutralization of CRLF Sequences vulnerabilities (CWE-93)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Other vulnerabilities in Kong Gateway Enterprise
- 8.2 High severity
- 8.7 High severity
- 8.2 High severity
- 8.3 High severity
- 7.8 High severity
- 8.2 High severity
Recent Improper Neutralization of CRLF Sequences vulnerabilities
- 10.0 Critical severity
- 7.5 High severity
- 7.2 High severity
- 7.1 High severity
- 7.1 High severity
- 7.2 High severity
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