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CVE-2026-100714— Froxlor before 2.3.12 Command Injection via letsencryptchallengepath

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 2.3.12 之前的版本未对 配置项进行限制或转义处理。与 GHSA-33mp 中被加固的同类配置不同，该字段缺乏 正则表达式校验或 令牌保护机制。其值在 中被未转义地拼接至 命令行，并通过 以 root 权限由 cron 定时任务执行。 由于 仅对分号（;）、管道符（ 受影响版本为 2.3.10 及更早版本；该问题已在 2.3.12 版本中修复。

CVSS 9.1 · Critical EPSS 0.55% · P44

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-100714

Vulnerability Information
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Vulnerability Title
Froxlor before 2.3.12 Command Injection via letsencryptchallengepath
Source: CVE Program / CVE List V5
Vulnerability Description
Froxlor before 2.3.12 does not restrict or escape the system.letsencryptchallengepath setting: unlike sibling settings hardened in GHSA-33mp, the field has no string_regexp or required_otp guard, and its value is concatenated unescaped into the acme.sh command line built in lib/Froxlor/Cron/Http/LetsEncrypt/AcmeSh.php and executed by the root cron via FileDir::safe_exec. Because safe_exec only blacklists shell metacharacters such as ; | & > < \ $ ~ ?, spaces and quotes survive and the value is word-split into additional acme.sh arguments. An administrator, or any actor able to write settings (for example through the settings-import API), can therefore inject acme.sh options such as --renew-hook, --pre-hook or --post-hook to obtain arbitrary command execution as root at the next Let's Encrypt cron run, or use --config-home/--cert-home for arbitrary file writes. Versions up to and including 2.3.10 are affected; the issue is fixed in 2.3.12.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
froxlor froxlor 0 ~ 2.3.12 -

II. Public POCs for CVE-2026-100714

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III. Intelligence Information for CVE-2026-100714

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Vendor Advisories for CVE-2026-100714 (1)

Other References for CVE-2026-100714 (1)

Same Patch Batch · froxlor · 2026-09-26 · 13 CVEs total

CVE-2026-100717 9.9 CRITICAL froxlor before 2.3.12 CRLF Injection via validateUrl userinfo
CVE-2026-100716 9.9 CRITICAL Froxlor before 2.3.12 Privilege Escalation via Symlink
CVE-2026-100715 9.6 CRITICAL Froxlor before 2.3.12 Arbitrary File Deletion via Symlink
CVE-2026-100720 8.7 HIGH Froxlor before 2.3.12 Stored XSS via SSL certificate issuer
CVE-2026-100713 7.8 HIGH Froxlor before 2.3.12 Privilege Escalation via SSH Key Sync
CVE-2026-100711 7.5 HIGH froxlor before 2.3.12 Authentication Bypass via Session Persistence
CVE-2026-100709 7.5 HIGH Froxlor before 2.3.12 2FA Bypass via Namespace Confusion
CVE-2026-100718 7.1 HIGH Froxlor before 2.3.12 Authentication Bypass via EmailSender.add
CVE-2026-100708 7.1 HIGH Froxlor before 2.3.13 Private Key Disclosure via Certificates API
CVE-2026-100712 6.5 MEDIUM froxlor before 2.3.12 Two-Factor Authentication Bypass via CSRF
CVE-2026-100719 6.5 MEDIUM Froxlor before 2.3.12 Credential Disclosure via DirProtections API
CVE-2026-100710 4.9 MEDIUM Froxlor before 2.3.12 DKIM Private Key Disclosure via API

IV. Related Vulnerabilities

Same product: froxlor
Same vendor: froxlor
Same weakness: CWE-88

V. Comments for CVE-2026-100714

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