CVE catalog

CVE-2026-33260

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.

[CVE catalog]

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Apr 21, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.52% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	pdns	sid	`5.1.5-1`	fixed
Debian	pdns	forky	`5.1.5-1`	fixed
Debian	pdns	trixie	`4.9.17-0+deb13u1`	fixed
Debian	pdns	trixie-security	`4.9.18-0+deb13u1`	fixed
Debian	pdns	bookworm	`4.7.3-2`	vulnerable
Debian	dnsdist	sid	`2.1.3-1`	fixed
Debian	dnsdist	forky	`2.1.3-1`	fixed
Debian	dnsdist	trixie	`1.9.16-0+deb13u1`	fixed
Debian	dnsdist	trixie-security	`1.9.16-0+deb13u1`	fixed
Debian	dnsdist	bookworm	`1.7.3-2`	vulnerable
Debian	pdns-recursor	sid	`5.4.9-1`	fixed
Debian	pdns-recursor	forky	`5.4.8-1`	fixed
Debian	pdns-recursor	trixie	`5.2.13-0+deb13u1`	fixed
Debian	pdns-recursor	trixie-security	`5.2.13-0+deb13u1`	fixed
Debian	pdns-recursor	bookworm	`4.8.8-1+deb12u1`	vulnerable
Debian	pdns-recursor	bookworm-security	`4.8.8-1+deb12u1`	vulnerable
Cpe	dnsdist	Not reported	Not reported	vulnerable
Cpe	pdns	Not reported	Not reported	vulnerable
Cpe	pdns-recursor	Not reported	Not reported	vulnerable
Cpe	authoritative	Not reported	`4.9.14`	fixed
Cpe	authoritative	Not reported	`5.0.4`	fixed
Cpe	dnsdist	Not reported	`1.9.13`	fixed
Cpe	dnsdist	Not reported	`2.0.4`	fixed
Cpe	recursor	Not reported	`5.2.9`	fixed
Cpe	recursor	Not reported	`5.3.6`	fixed
Cpe	recursor	Not reported	Not reported	unknown
Cpe	authoritative	Not reported	`5.0.4`	fixed
Cpe	dnsdist	Not reported	`2.0.4`	fixed
Cpe	recursor	Not reported	Not reported	unknown

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	pdns	source	sid	`5.0.4-1`	not yet assigned	Not reported	[1135373]
Debian	pdns	source	forky	`5.0.4-1`	not yet assigned	Not reported	[1135373]
Debian	pdns	source	trixie	`4.9.14-0+deb13u1`	not yet assigned	Not reported	[1135373]
Debian	pdns	source	bookworm	`(unfixed)`	end-of-life	Not reported	[1135373]
Debian	dnsdist	source	sid	`2.0.4-1`	not yet assigned	Not reported	Not reported
Debian	dnsdist	source	forky	`2.0.4-1`	not yet assigned	Not reported	Not reported
Debian	dnsdist	source	trixie	`1.9.14-0+deb13u1`	not yet assigned	Not reported	Not reported
Debian	dnsdist	source	bookworm	`(unfixed)`	end-of-life	Not reported	Not reported
Debian	pdns-recursor	source	sid	`5.3.0-1`	not yet assigned	Not reported	Not reported
Debian	pdns-recursor	source	forky	`5.3.0-1`	not yet assigned	Not reported	Not reported
Debian	pdns-recursor	source	trixie	`5.2.9-0+deb13u1`	not yet assigned	Not reported	Not reported
Debian	pdns-recursor	source	bookworm	`(unfixed)`	end-of-life	Not reported	Not reported
Cpe	authoritative	cpe	Not reported	`4.9.14`	Not reported	Not reported	Not reported
Cpe	authoritative	cpe	Not reported	`5.0.4`	Not reported	Not reported	Not reported
Cpe	dnsdist	cpe	Not reported	`1.9.13`	Not reported	Not reported	Not reported
Cpe	dnsdist	cpe	Not reported	`2.0.4`	Not reported	Not reported	Not reported
Cpe	recursor	cpe	Not reported	`5.2.9`	Not reported	Not reported	Not reported
Cpe	recursor	cpe	Not reported	`5.3.6`	Not reported	Not reported	Not reported
Cpe	authoritative	cpe	Not reported	`5.0.4`	Not reported	NVD-CVE-2026-33260	Not reported
Cpe	dnsdist	cpe	Not reported	`2.0.4`	Not reported	NVD-CVE-2026-33260	Not reported

[Debian bug #1135373]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[dnsdist]Affected
Details (2)
- 1.7.3-2 · amd64 · bookworm
  Affected
  nvd · dnsdist · debian · bookworm; nvd · dnsdist · debian · 12
- 1.7.3-2 · arm64 · bookworm
  Affected
  nvd · dnsdist · debian · bookworm; nvd · dnsdist · debian · 12
[pdns-backend-bind]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-geoip]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-ldap]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-lmdb]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-lua2]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-mysql]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-odbc]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-pgsql]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-pipe]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-remote]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-sqlite3]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-backend-tinydns]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-ixfrdist]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-recursor]Affected
Details (4)
- 4.8.8-1+deb12u1 · amd64 · bookworm
  Affected
  nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12
- 4.8.8-1+deb12u1 · arm64 · bookworm
  Affected
  nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12
- 4.8.8-1+deb12u1 · amd64 · bookworm-security
  Affected
  nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12
- 4.8.8-1+deb12u1 · arm64 · bookworm-security
  Affected
  nvd · pdns-recursor · debian · bookworm; nvd · pdns-recursor · debian · 12
[pdns-server]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
[pdns-tools]Affected
Source package: [pdns]
Details (2)
- 4.7.3-2 · amd64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12
- 4.7.3-2 · arm64 · bookworm
  Affected
  nvd · pdns · debian · bookworm; nvd · pdns · debian · 12

[Debian 13 (Trixie)]

[dnsdist]Fixed
Details (4)
- 1.9.15-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 1.9.14-0+deb13u1
  nvd · dnsdist · debian · 13
- 1.9.15-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 1.9.14-0+deb13u1
  nvd · dnsdist · debian · 13
- 1.9.16-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 1.9.14-0+deb13u1
  nvd · dnsdist · debian · 13
- 1.9.16-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 1.9.14-0+deb13u1
  nvd · dnsdist · debian · 13
[pdns-backend-bind]Fixed
Source package: [pdns]
Details (5)
- 4.9.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.17-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.17-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.18-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
[pdns-backend-geoip]Fixed
Source package: [pdns]
Details (5)
- 4.9.16-0+deb13u1 · amd64 · trixie
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.16-0+deb13u1 · arm64 · trixie
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.17-0+deb13u1 · amd64 · trixie-security · Historical version
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.17-0+deb13u1 · arm64 · trixie-security
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13
- 4.9.18-0+deb13u1 · amd64 · trixie-security
  Fixed · Fixed: 4.9.14-0+deb13u1
  nvd · pdns · debian · 13

Next results

Observed: Oct 27, 2026, 8:41:12 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]