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CVE-2026-123041VulnerabilityPublished

Kong Gateway Enterprise · Request-callout Plugin

Source GCVE Database

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Authoritative record:CVE-2026-123041· High 8.2

Not known to be exploited · CVSS 8.2 High · fixed in 3.16.0.2 : patch Kong Gateway Enterprise soon.

Data as of 11 Nov 2026, 01:34 UTC

CVSS 4.0 base score
8.2High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Kong)CVSS 4.08.2
Patch
Available – fixed in 3.16.0.2, 3.15.0.7, 3.14.0.17 +3
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

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 10 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
Kong Inc.Kong Gateway EnterpriseAffected
  • >=3.16.0.0 <3.16.0.2
Fixed in
  • 3.16.0.2
Kong Inc.Kong Gateway EnterpriseAffected
  • >=3.15.0.0 <3.15.0.7
Fixed in
  • 3.15.0.7
Kong Inc.Kong Gateway EnterpriseAffected
  • >=3.14.0.0 <3.14.0.17
Fixed in
  • 3.14.0.17
Kong Inc.Kong Gateway EnterpriseAffected
  • >=3.13.0.0 <3.13.0.12
Fixed in
  • 3.13.0.12
Kong Inc.Kong Gateway EnterpriseAffected
  • >=3.10.0.0 <3.10.0.20
Fixed in
  • 3.10.0.20
Kong Inc.Kong AI GatewayAffected
  • >=2.2.0 <2.2.1
Fixed in
  • 2.2.1

AI-suggested

If you cannot patch yet, users should consider disabling the request-callout plugin or limiting its use in sensitive contexts to mitigate risk.

Description

A vulnerability in the request-callout plugin of Kong Gateway Enterprise and Kong AI Gateway causes omission of callout headers not sent by the client from the cache key. This flaw allows cached callout responses intended for one caller to be served to another, potentially leading to incorrect or unauthorized data being returned.

References

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