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CVE Vulnerability Details :
CVE-2026-33611
PUBLISHED
More InfoOfficial Page
Assigner-OX
Assigner Org ID-8ce71d90-2354-404b-a86e-bec2cc4e6981
View Known Exploited Vulnerability (KEV) details
Published At-22 Apr, 2026 | 14:01
Updated At-22 Apr, 2026 | 14:24
Rejected At-
▼CVE Numbering Authority (CNA)
Insufficient validation of HTTPS and SVCB records

An operator allowed to use the REST API can cause the Authoritative server to produce invalid HTTPS or SVCB record data, which can in turn cause LMDB database corruption, if using the LMDB backend.

Affected Products
Vendor
PowerDNS
Product
Authoritative
Collection URL
https://repo.powerdns.com/
Package Name
pdns
Repo
https://github.com/PowerDNS/pdns
Modules
  • SVCB/ALPN parsing
Program Files
  • dnswriter.cc
  • rcpgenerator.cc
Default Status
unaffected
Versions
Affected
  • From 5.0.0 before 5.0.4 (semver)
  • From 4.9.0 before 4.9.14 (semver)
Problem Types
TypeCWE IDDescription
CWEIntegerInteger Overflow or Wraparound
Type: CWE
CWE ID: Integer
Description: Integer Overflow or Wraparound
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Tibs
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html
N/A
Hyperlink: https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-05.html
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Problem Types
TypeCWE IDDescription
CWECWE-190CWE-190 Integer Overflow or Wraparound
Type: CWE
CWE ID: CWE-190
Description: CWE-190 Integer Overflow or Wraparound
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found