Is CVE-2026-100714 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-100714 being exploited in the wild.

How severe is CVE-2026-100714?

Critical severity, with a CVSS score of 9.1, published 26 September 2026.

Which products and versions are affected?

Froxlor before 2.3.12, up to and including 2.3.10.

Is there a fix for CVE-2026-100714?

A patch was published on 2026-09-26: Fix released in version 2.3.12 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-100714 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-100714?

Check whether you run Froxlor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-100714: Froxlor argument injection in Let's Encrypt challenge path setting

CVE-2026-100714 · Severity: critical · CVSS 9.1 · Published 2026-09-26

Froxlor is a web hosting control panel that manages SSL/TLS certificates via Let's Encrypt automation. An administrator or attacker with settings modification rights can inject malicious arguments into the Let's Encrypt certificate renewal command, gaining root-level code execution on the hosting panel server when the automated renewal cron job runs.

Technologies: Froxlor. Vendors: Froxlor.

Quick answers

Is CVE-2026-100714 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-100714 being exploited in the wild.
How severe is CVE-2026-100714?: Critical severity, with a CVSS score of 9.1, published 26 September 2026.
Which products and versions are affected?: Froxlor before 2.3.12, up to and including 2.3.10.
Is there a fix for CVE-2026-100714?: A patch was published on 2026-09-26: Fix released in version 2.3.12 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-100714 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-100714?: Check whether you run Froxlor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The system.letsencryptchallengepath configuration setting is concatenated unescaped into an acme.sh command line executed by root cron via FileDir::safe_exec(). While safe_exec blacklists shell metacharacters (;|&><\$~?), it permits spaces and quotes, allowing word-splitting into arbitrary acme.sh arguments. An authenticated admin or API actor can inject options like --renew-hook, --pre-hook, --post-hook, or --config-home to achieve arbitrary command execution as root or write arbitrary files.

Affected products

Froxlor Froxlor before 2.3.12, up to and including 2.3.10

Timeline

2026-09-26: disclosed: Public advisory published
2026-09-26: patched: Fix released in version 2.3.12

References

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