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CVE-2026-16971— DFIR-IRIS Missing Brute Force Protection in OTP Validation

Quick assessment

Affected
dfir-iris iris-web
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.

DFIR-IRIS Iris是DFIR-IRIS组织开源的一个快速、简单但功能齐全且非常高效的 Go 网络框架。 DFIR-IRIS IRIS 2.4.26版本存在资源管理错误漏洞，该漏洞源于MFA验证未受到保护，容易受到暴力破解攻击。

CVSS 5.9 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1110.001 · Password Guessing

Affected Version Matrix 1

VendorProduct Version RangeStatus
dfir-iris iris-web 2.4.26 affected
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I. Basic Information for CVE-2026-16971

Vulnerability Information
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Vulnerability Title
DFIR-IRIS Missing Brute Force Protection in OTP Validation
Source: CVE Program / CVE List V5
Vulnerability Description
The IRIS web application in version 2.4.26 and possibly others does not protect its MFA validation against brute-force attacks.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
DFIR-IRIS IRIS 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DFIR-IRIS Iris是DFIR-IRIS组织开源的一个快速、简单但功能齐全且非常高效的 Go 网络框架。 DFIR-IRIS IRIS 2.4.26版本存在资源管理错误漏洞，该漏洞源于MFA验证未受到保护，容易受到暴力破解攻击。
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
dfir-iris iris-web 2.4.26 -

II. Public POCs for CVE-2026-16971

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III. Intelligence Information for CVE-2026-16971

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Vendor Advisories for CVE-2026-16971 (1)

Same Patch Batch · dfir-iris · 2026-07-30 · 6 CVEs total

CVE-2026-16969 7.6 HIGH DFIR-IRIS Stored XSS in Assets
CVE-2026-18361 7.6 HIGH DFIR-IRIS Stored XSS in Datastore Upload
CVE-2026-18360 7.6 HIGH DFIR-IRIS Stored XSS in Custom Attributes
CVE-2026-18362 5.9 MEDIUM DFIR-IRIS Missing Brute Force Protection in User Authentication
CVE-2026-16970 4.2 MEDIUM DFIR-IRIS Insufficient Logout Implementation

IV. Related Vulnerabilities

Same product: iris-web
Same vendor: dfir-iris
Same weakness: CWE-770

V. Comments for CVE-2026-16971

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