TI-2026-19356 Aliases CVE-2026-24027 GHSA-m7h2-p2wj-5964

Authentication bypass by capture-replay in PowerDNS Recursor

LOW 30CWE-294Published 2026-02-09 · Updated 2026-02-09

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-294.

Summary

Crafted zones can lead to increased incoming network traffic.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00462 40th percentileScored 2026-11-07

Fix Fixed Recursor (PowerDNS): 5.3.5, 5.2.8, 5.1.10

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
PowerDNS	Recursor	5.3.0 to before 5.3.5; 5.2.0 to before 5.2.8; 5.1.0 to before 5.1.10	5.3.5, 5.2.8, 5.1.10	Patch available	CNA

Recursor VendorPowerDNS Affected 5.3.0 to before 5.3.5; 5.2.0 to before 5.2.8; 5.1.0 to before 5.1.10 Fixed in 5.3.5, 5.2.8, 5.1.10 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:powerdns:recursor::::::::	5.1.0 to before 5.1.10; 5.2.0 to before 5.2.8; 5.3.0 to before 5.3.5	Vulnerable	PowerDNS

cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* Versions 5.1.0 to before 5.1.10; 5.2.0 to before 5.2.8; 5.3.0 to before 5.3.5 Vulnerable ·PowerDNS

Remediation

Fix · CNA Recursor (PowerDNS) Fixed in 5.3.5, 5.2.8, 5.1.10

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Release · 2026-02-09
PowerDNS Recursor 5.1.10, 5.2.8, 5.3.5
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-00260 Resource allocation without limits in PowerDNS RecursorPriority LOW 30
Show all 2 records →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2026-24027
2026-10-03 Alias added: GHSA-m7h2-p2wj-5964

References

Advisory 1

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2026-01.html

TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
TI-2015-01678 The label decompression functionality in PowerDNS Recursor 3.5.x, 3.6.x before 3.6.3, and… CVSS 2.0HIGH 7.8
TI-2018-12065 Out-of-bounds read in [UNKNOWN] pdns-recursor CVSS 3.0HIGH 7.5
TI-2017-11091 NULL pointer dereference in PowerDNS pdns-recursor CVSS 3.0HIGH 7.5
TI-2014-07065 PowerDNS Recursor before 3.6.2 does not limit delegation chaining, which allows remote… CVSS 2.0MEDIUM 5.0

See all 49 →

Sources

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