CVE-2026-2606 | IBM webMethods API Management fails to validate user input and enables unauthorized arbitrary file read

IBM webMethods API Gateway (on-prem) 10.11 through 10.11_Fix3210.15 to 10.15_Fix2711.1 to 11.1_Fix7 IBM webMethods API Management (on-prem) fails to properly validate user-supplied input passed to the url parameter on the /createapi endpoint. An attacker can modify this parameter to use a file:// URI schema instead of the expected https:// schema, enabling unauthorized arbitrary file read access on the underlying server file system.

Published: 2026-03-03 Last update: 2026-03-05 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-2606 is rated Low Risk (31.4/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-2606

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-09 0.04% 0.05% +0.01%
2 2026-03-04 — 0.04% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-2606

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2026-2606

Affected software / configurations for CVE-2026-2606

Vendor Product Version Raw CPE
ibm webmethods_api_gateway 10.11 cpe:2.3:a:ibm:webmethods_api_gateway:10.11:-:*:*:on-prem:*:*:*
ibm webmethods_api_gateway 10.11 cpe:2.3:a:ibm:webmethods_api_gateway:10.11:fix32:*:*:on-prem:*:*:*
ibm webmethods_api_gateway 10.15 cpe:2.3:a:ibm:webmethods_api_gateway:10.15:-:*:*:on-prem:*:*:*
ibm webmethods_api_gateway 10.15 cpe:2.3:a:ibm:webmethods_api_gateway:10.15:fix27:*:*:on-prem:*:*:*
ibm webmethods_api_gateway 11.1 cpe:2.3:a:ibm:webmethods_api_gateway:11.1:-:*:*:on-prem:*:*:*
ibm webmethods_api_gateway 11.1 cpe:2.3:a:ibm:webmethods_api_gateway:11.1:fix7:*:*:on-prem:*:*:*

References for CVE-2026-2606

cvelogic Threat Intelligence