HTML injection in the web dashboard

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Summary

CVECVE-2026-0396
StatePUBLISHED
AssignerOX
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-31 12:16:27 UTC
Updated2026-04-13 12:46:34 UTC
DescriptionAn 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

EPSS: 0.000040000 probability, percentile 0.001490000 (date 2026-04-07)

Problem Types: CWE-80 | Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) | CWE-80 CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1[email protected]Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
3.1CNACVSS3.1LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Powerdns Dnsdist All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA PowerDNS DNSdist affected 1.9.0 1.9.12 semver Not specified
CNA PowerDNS DNSdist affected 2.0.0 2.0.3 semver Not specified

References

ReferenceSourceLinkTags
www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-02.html [email protected] www.dnsdist.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Aisle Research (en)

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