Summaryinfo

A vulnerability was found in PowerDNS DNSdist up to 1.9.11/2.0.2. It has been classified as problematic. This affects the function DynBlockRulesGroup:setSuffixMatchRule/DynBlockRulesGroup:setSuffixMatchRuleFFI. This manipulation causes injection. This vulnerability appears as CVE-2026-0396. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in PowerDNS DNSdist up to 1.9.11/2.0.2. It has been declared as problematic. Affected by this vulnerability is the function DynBlockRulesGroup:setSuffixMatchRule/DynBlockRulesGroup:setSuffixMatchRuleFFI. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect integrity. The summary by CVE is:

An attacker might be able to inject HTML content into the internal web dashboard by sending crafted DNS queries to a DNSdist instance where domain-based dynamic rules have been enabled via either DynBlockRulesGroup:setSuffixMatchRule or DynBlockRulesGroup:setSuffixMatchRuleFFI.

The advisory is shared at dnsdist.org. This vulnerability is known as CVE-2026-0396 since 11/28/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 1.9.12 or 2.0.3 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Domain Name Software

Vendor

• PowerDNS

Name

• DNSdist

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6
• 1.9.7
• 1.9.8
• 1.9.9
• 1.9.10
• 1.9.11
• 2.0.0
• 2.0.1
• 2.0.2

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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CVSSv3info

CVSSv2info

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Entryinfo

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