Information disclosure via CORS misconfiguration
When the internal webserver is enabled (default is disabled), an attacker might be able to trick an administrator logged to the dashboard into visiting a malicious website and extract information about the running configuration from the dashboard. The root cause of the issue is a misconfiguration of the Cross-Origin Resource Sharing (CORS) policy.
- Published
- Mar 31, 2026
- Updated
- Jul 25, 2026
- EPSS
- 0.2% · 5th percentile
- CWE
- CWE-942
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Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.2%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 4.3
- CNA · OX
- 3.1
- 1.2 point gap
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| powerdns | dnsdist | cpe:2.3:a:powerdns:dnsdist |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- powerdns dnsdist1.9.0 and later · before 1.9.12
- powerdns dnsdist2.0.0 and later · before 2.0.3
Versions reported by the vendor
Affected version ranges reported by the assigning authority (OX). Independent of NVD's CPE analysis and usually ahead of it.
PowerDNS DNSdist
- 1.9.0 and later · before 1.9.12affected · semver
- 2.0.0 and later · before 2.0.3affected · semver
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | dnsdist | all versions | — |
| Debian:13 | dnsdist | before 1.9.14-0+deb13u1 | 1.9.14-0+deb13u1 |
| Debian:14 | dnsdist | before 2.0.3-1 | 2.0.3-1 |
| openSUSE:Leap 16.0 | dnsdist | before 1.9.13-160000.1.1 | 1.9.13-160000.1.1 |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | dnsdist | before 1.9.12-150700.3.9.1 | 1.9.12-150700.3.9.1 |
| SUSE:Linux Enterprise Server 16.0 | dnsdist | before 1.9.13-160000.1.1 | 1.9.13-160000.1.1 |
Same product
powerdns: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-33598Out-of-bounds read in cache inspection via Lua37Monitor
- CVE-2017-7557dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.35Monitor
- CVE-2026-33602Off-by-one access when processing crafted UDP responses32Monitor
- CVE-2026-33599Out-of-bounds read in service discovery32Monitor
- CVE-2026-24028Out-of-bounds read when parsing DNS packets via Lua32Monitor
- CVE-2025-30194Denial of service via crafted DoH exchange31Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| PowerDNS DNSdist | 1.9.12 | Vendor (CNA) |
| PowerDNS DNSdist | 2.0.3 | Vendor (CNA) |
| debian:dnsdist | 1.9.14-0+deb13u1 · Debian:13 | Package registry (OSV) |
| opensuse:dnsdist | 1.9.13-160000.1.1 · openSUSE:Leap 16.0 | Package registry (OSV) |
| suse:dnsdist | 1.9.12-150700.3.9.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP7 | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- No account or password is required.
- A user must open a link or visit a page.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- low · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- Low
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-942 · Permissive Cross-domain Security Policy with Untrusted DomainsCVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.