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CVE-2026-5418— appsmithorg appsmith Dashboard WebClientUtils.java computeDisallowedHosts server-side request forgery

Quick assessment

Affected
appsmithorg appsmith
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Appsmith是Appsmith开源的一个用于构建、部署和维护内部应用程序的开源平台。 Appsmith 1.97及之前版本存在代码问题漏洞，该漏洞源于对文件app/server/appsmith-interfaces/src/main/java/com/appsmith/util/WebClientUtils.java中Dashboard组件的computeDisallowedHosts函数的错误操作，可能导致服务端请求伪造。

CVSS 7.3 · High EPSS 0.30% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-5418

Vulnerability Information
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Vulnerability Title
appsmithorg appsmith Dashboard WebClientUtils.java computeDisallowedHosts server-side request forgery
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in appsmithorg appsmith up to 1.97. Impacted is the function computeDisallowedHosts of the file app/server/appsmith-interfaces/src/main/java/com/appsmith/util/WebClientUtils.java of the component Dashboard. Such manipulation leads to server-side request forgery. The attack may be launched remotely. The exploit is publicly available and might be used. Upgrading to version 1.99 is recommended to address this issue. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Appsmith 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Appsmith是Appsmith开源的一个用于构建、部署和维护内部应用程序的开源平台。 Appsmith 1.97及之前版本存在代码问题漏洞，该漏洞源于对文件app/server/appsmith-interfaces/src/main/java/com/appsmith/util/WebClientUtils.java中Dashboard组件的computeDisallowedHosts函数的错误操作，可能导致服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
appsmithorg appsmith 1.0 cpe:2.3:a:appsmith:appsmith:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-5418

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III. Intelligence Information for CVE-2026-5418

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Vendor Advisories for CVE-2026-5418 (2)

IV. Related Vulnerabilities

Same product: appsmith
Same vendor: appsmithorg
Same weakness: CWE-918

V. Comments for CVE-2026-5418

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