CVE-2026-33257
- Source
- https://cve.org/CVERecord?id=CVE-2026-33257
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33257.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-33257
- Downstream
- Related
- Published
- 2026-04-22T09:37:59Z
- Modified
- 2026-08-12T15:32:34Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- Insufficient input validation of internal webserver
- Details
-
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.
- Database specific
{ "cna_assigner": "OX", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33257.json" }- References
-
- https://repo.powerdns.com/
- https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-05.html
- https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-03.html
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33257.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-33257
- https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-04.html
- https://github.com/PowerDNS/pdns
Affected packages
Git / github.com/powerdns/pdns
Affected ranges
- Type
- GIT
- Repo
- https://github.com/powerdns/pdns
- Events
-
IntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedFixedIntroducedLast Affected
- Database specific
-
Show details
{ "cpe": [ "cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*", "cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*", "cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*", "cpe:2.3:a:powerdns:recursor:5.4.0:*:*:*:*:*:*:*" ], "extracted_events": [ { "introduced": "4.9.0" }, { "fixed": "4.9.14" }, { "introduced": "5.0.0" }, { "fixed": "5.0.4" }, { "introduced": "1.9.0" }, { "fixed": "1.9.13" }, { "introduced": "2.0.0" }, { "fixed": "2.0.4" }, { "introduced": "5.2.0" }, { "fixed": "5.2.9" }, { "introduced": "5.3.0" }, { "fixed": "5.3.6" }, { "introduced": "5.4.0" }, { "last_affected": "5.4.0" } ], "source": [ "CPE_RANGE", "CPE_STRING" ] }
Affected versions
5.*
5.4.0
auth-4.*
auth-4.9.0
auth-4.9.0-beta1
auth-4.9.0-beta2
auth-4.9.1
auth-4.9.10
auth-4.9.11
auth-4.9.12
auth-4.9.13
auth-4.9.2
auth-4.9.3
auth-4.9.4
auth-4.9.5
auth-4.9.6
auth-4.9.7
auth-4.9.8
auth-4.9.9
dnsdist-1.*
dnsdist-1.9.0
dnsdist-1.9.1
dnsdist-1.9.10
dnsdist-1.9.11
dnsdist-1.9.2
dnsdist-1.9.3
dnsdist-1.9.4
dnsdist-1.9.5
dnsdist-1.9.6
dnsdist-1.9.7
dnsdist-1.9.8
dnsdist-1.9.9
dnsdist-2.*
dnsdist-2.0.0
dnsdist-2.0.1
dnsdist-2.0.2
rec-5.*
rec-5.0.0
rec-5.0.0-rc2
rec-5.0.1
rec-5.0.3
rec-5.2.0
rec-5.2.2
rec-5.2.4
rec-5.2.5
rec-5.2.6
rec-5.2.8
rec-5.3.0
rec-5.3.1
rec-5.3.4
rec-5.4.0
rec-5.4.0-rc1
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33257.json"
vanir_signatures
[
{
"deprecated": false,
"digest": {
"line_hashes": [
"152898936404715912717012814958473792269",
"4575082192570469972237185990035341899",
"177678008705605303260633753884530753700",
"136680451824217662945478382805808332729",
"204969285221527224213910579710674063651",
"66014210593085438182573307698386496097",
"17525951591113452044796585153110335921"
],
"threshold": 0.9
},
"id": "CVE-2026-33257-2829cf85",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
"target": {
"file": "pdns/dnscrypt.cc"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "172078194597412758162700597563448847475",
"length": 706
},
"id": "CVE-2026-33257-4b79aae9",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
"target": {
"file": "pdns/dnscrypt.cc",
"function": "DNSCryptQuery::computePaddingSize"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
"267164273993890695462681232822702173228",
"254147238750497149020354176624768531180",
"111833849558877957770686629013387565768",
"172795771022719102256161942256088786852",
"116846252582779990294504138599689757229",
"132209276398926440573610110361447772713"
],
"threshold": 0.9
},
"id": "CVE-2026-33257-95ede998",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/1d377042e08ae8843834f572882cf5e7933779a0",
"target": {
"file": "pdns/recursordist/rpzloader.cc"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "219139187612696838153193600735147256736",
"length": 3007
},
"id": "CVE-2026-33257-b8fc9376",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/642a2bb5b67b2bf5c856819273d8f41fecbc0da8",
"target": {
"file": "pdns/dnscrypt.cc",
"function": "DNSCryptQuery::encryptResponse"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
"6864841829016440226917919286801415092",
"177254253808237988567579585374243740684",
"281318965586644528261302210434407655020",
"236182772979616684272007619339406923158",
"321739554045469880473225520600194266713",
"204969285221527224213910579710674063651",
"66014210593085438182573307698386496097",
"17525951591113452044796585153110335921"
],
"threshold": 0.9
},
"id": "CVE-2026-33257-d901a0a8",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
"target": {
"file": "pdns/dnsdistdist/dnscrypt.cc"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "276771802078087666188325581091504637136",
"length": 839
},
"id": "CVE-2026-33257-e809c528",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
"target": {
"file": "pdns/dnsdistdist/dnscrypt.cc",
"function": "DNSCryptQuery::computePaddingSize"
}
},
{
"deprecated": false,
"digest": {
"line_hashes": [
"267164273993890695462681232822702173228",
"254147238750497149020354176624768531180",
"111833849558877957770686629013387565768",
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"116846252582779990294504138599689757229",
"132209276398926440573610110361447772713"
],
"threshold": 0.9
},
"id": "CVE-2026-33257-eff8fcee",
"signature_type": "Line",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/b297bb729c002bc715a362fb0dd953e581c9055b",
"target": {
"file": "pdns/recursordist/rpzloader.cc"
}
},
{
"deprecated": false,
"digest": {
"function_hash": "259782563136530440917701746095514260405",
"length": 3491
},
"id": "CVE-2026-33257-f8ee4cee",
"signature_type": "Function",
"signature_version": "v1",
"source": "https://github.com/powerdns/pdns/commit/bfd0cbf4bf5c1f8757d0cd94c86ea88caf7b2f6d",
"target": {
"file": "pdns/dnsdistdist/dnscrypt.cc",
"function": "DNSCryptQuery::encryptResponse"
}
}
]
vanir_signatures_modified
"2026-08-12T15:32:34Z"