What’s Vulnerable › Vulnerabilities

CVE-2026-30932: Froxlor is vulnerable to BIND zone file injection via unsanitized DNS record content in DomainZones API

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-24 · updated 2026-06-17
• Weakness: CWE-74

Description

Froxlor is open source server administration software. Prior to version 2.3.5, the DomainZones.add API endpoint (accessible to customers with DNS enabled) does not validate the content field for several DNS record types (LOC, RP, SSHFP, TLSA). An attacker can inject newlines and BIND zone file directives (e.g. $INCLUDE) into the zone file that gets written to disk when the DNS rebuild cron job runs. This issue has been patched in version 2.3.5.

Affected products

• froxlor: before 2.3.5 — fixed in 2.3.5

How to fix

Upgrade to a fixed version: froxlor 2.3.5. Check the vendor advisory for mitigations.

References

• https://github.com/froxlor/froxlor/commit/b34829262dc32818b37f6a1eabb426d0b277a86b
• https://github.com/froxlor/froxlor/releases/tag/2.3.5
• https://github.com/froxlor/froxlor/security/advisories/GHSA-x6w6-2xwp-3jh6

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