PowerDNS DNSdist up to 1.9.11/2.0.2 early_acl_drop Remote Code Execution

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in PowerDNS DNSdist up to 1.9.11/2.0.2. Impacted is the function early_acl_drop. Performing a manipulation results in Remote Code Execution. This vulnerability is identified as CVE-2026-24029. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PowerDNS DNSdist up to 1.9.11/2.0.2. It has been classified as critical. This affects the function early_acl_drop. The manipulation with an unknown input leads to a remote code execution vulnerability. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

When the early_acl_drop (earlyACLDrop in Lua) option is disabled (default is enabled) on a DNS over HTTPs frontend using the nghttp2 provider, the ACL check is skipped, allowing all clients to send DoH queries regardless of the configured ACL.

The weakness was released by Surya Narayan Kushwaha. The advisory is shared at dnsdist.org. This vulnerability is uniquely identified as CVE-2026-24029 since 01/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

Upgrading to version 1.9.12 or 2.0.3 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: DNSdist 1.9.12/2.0.3

Timelineinfo

01/20/2026 CVE reserved
03/31/2026 +69 days Advisory disclosed
03/31/2026 +0 days VulDB entry created
03/31/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: dnsdist.org
Researcher: Surya Narayan Kushwaha
Status: Confirmed

CVE: CVE-2026-24029 (🔒)
GCVE (CVE): GCVE-0-2026-24029
GCVE (VulDB): GCVE-100-354381

Entryinfo

Created: 03/31/2026 14:45
Changes: 03/31/2026 14:45 (63)
Complete: 🔍
Cache ID: 216:C73:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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