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CVE-2026-54543— Froxlor DomainZones.add allows DNS zone-file RR injection via record/type fields

Quick assessment

Affected
froxlor froxlor
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.

Froxlor是Froxlor组织开源的一款服务器管理软件。 Froxlor 2.3.8之前版本存在输入验证错误漏洞，该漏洞源于DomainZones.add API命令未正确过滤用户输入的record和type值，导致攻击者可通过注入额外的DNS资源记录行绕过验证，修改DNS数据并可能影响DNS可用性。

CVSS 5.4 · Medium EPSS 0.43% · P35

Affected Version Matrix 1

VendorProduct Version RangeStatus
froxlor froxlor < 2.3.8 affected
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I. Basic Information for CVE-2026-54543

Vulnerability Information
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Vulnerability Title
Froxlor DomainZones.add allows DNS zone-file RR injection via record/type fields
Source: CVE Program / CVE List V5
Vulnerability Description
Froxlor is open source server administration software. Prior to 2.3.8, the DomainZones.add API command in lib/Froxlor/Api/Commands/DomainZones.php accepts user-controlled record and type values without rejecting line delimiters, tab characters, semicolons, or unsupported DNS record types before lib/Froxlor/Dns/DnsEntry.php serializes the values into a BIND zone file. An authenticated customer with DNS-zone permissions can place a crafted value in the record field, or use the related type-field variant, to create additional resource-record lines that bypass Froxlor's field-level validation. BIND accepts the injected records, allowing modification of DNS data and possible DNS availability impact within a zone the caller is authorized to manage. This issue is fixed in version 2.3.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输出中的特殊元素转义处理不恰当(注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Froxlor 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Froxlor是Froxlor组织开源的一款服务器管理软件。 Froxlor 2.3.8之前版本存在输入验证错误漏洞，该漏洞源于DomainZones.add API命令未正确过滤用户输入的record和type值，导致攻击者可通过注入额外的DNS资源记录行绕过验证，修改DNS数据并可能影响DNS可用性。
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
froxlor froxlor < 2.3.8 -

II. Public POCs for CVE-2026-54543

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III. Intelligence Information for CVE-2026-54543

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Patches & Fixes for CVE-2026-54543 (1)

Vendor Advisories for CVE-2026-54543 (2)

Same Patch Batch · froxlor · 2026-08-18 · 6 CVEs total

CVE-2026-62988 9.0 CRITICAL Froxlor: Credential and 2FA secret disclosure via Froxlor API endpoints
CVE-2026-54347 8.7 HIGH Froxlor: Stored XSS in DNS TXT Record Content Allows Customer-to-Admin Account Takeover
CVE-2026-52793 8.1 HIGH Froxlor: API Authentication bypasses 2FA Authentication
CVE-2026-54348 7.2 HIGH Froxlor: Second-Order SQL Injection via `Admins.add` `ipaddress` Parameter Allows Full Dat
CVE-2026-55593 6.5 MEDIUM Froxlor: CSRF Vulnerability in Froxlor AJAX Endpoint — Missing Cross-Site Request Forgery

IV. Related Vulnerabilities

Same product: froxlor
Same vendor: froxlor
Same weakness: CWE-74

V. Comments for CVE-2026-54543

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