CVE-2019-3871

mediumpriority · track · 39EPSS 0.126 · 96 %ileEURUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

12.6% (96th) EPSS

CVSS 6.5 · medium

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-27

A vulnerability was found in PowerDNS Authoritative Server before 4.0.7 and before 4.1.7. An insufficient validation of data coming from the user when building a HTTP request from a DNS query in the HTTP Connector of the Remote backend, allowing a remote user to cause a denial of service by making the server connect to an invalid endpoint, or possibly information disclosure by making the server connect to an internal endpoint and somehow extracting meaningful information about the response

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.08.8highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Lsecondary · ENISA EU

v3.06.5mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Lsecondary · secalert@redhat.com USexploitability 3.9 · impact 2.5

v3.08.1highCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

v3.18.8highAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-20US

affected products (15)

Products and version ranges known to be affected.

The PowerDNS Project pdns≤ 4.1.7enisa_euvdEU
The PowerDNS Project pdns≤ 4.0.7enisa_euvdEU
Fedora Project Fedora≤ 28fstec_bduRU
Fedora Project Fedora≤ 29fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.0fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 42.3fstec_bduRU
PowerDNS.COM BV PowerDNS≤ 4.0.7fstec_bduRU
PowerDNS.COM BV PowerDNS4.1.0 → 4.1.7fstec_bduRU
АО «ИВК» Альт 8 СПall versionsfstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 9fstec_bduRU
Сообщество свободного программного обеспечения Debian GNU/Linux≤ 8fstec_bduRU
fedoraproject fedora= 28nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
fedoraproject fedora= 29nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
powerdns authoritative server< 4.0.7nvdUScpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*
powerdns authoritative server4.1.0 → 4.1.7nvdUScpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2019-03-21modified 2026-06-17

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references (40)

External citations — patches, advisories, analysis.

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