CVE-2026-33257 (GCVE-0-2026-33257)

Vulnerability from cvelistv5 – Published: 2026-04-22 09:37 – Updated: 2026-04-22 18:10
VLAI?
Title
Insufficient input validation of internal webserver
Summary
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
Severity ?
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
  • Allocation of Resources Without Limits or Throttling
Assigner
OX
References
Impacted products
Vendor Product Version
PowerDNS Authoritative Affected: 5.0.0 , < 5.0.4 (semver)
Affected: 4.9.0 , < 4.9.14 (semver)
Create a notification for this product.
    PowerDNS DNSdist Affected: 1.9.0 , < 1.9.13 (semver)
Affected: 2.0.0 , < 2.0.4 (semver)
Create a notification for this product.
    PowerDNS Recursor Affected: 5.4.0 , < 5.4.1 (semver)
Affected: 5.3.0 , < 5.3.6 (semver)
Affected: 5.2.0 , < 5.2.9 (semver)
Create a notification for this product.
Date Public ?
2026-04-21 22:00
Credits
Vitaly Simonovich
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.