TI-2026-37815 Aliases CVE-2026-52690 GHSA-c2h5-7f6m-jqmp

Spoofed answers can mark an authoritative non-EDNS capable

LOW 27CWE-290Published 2026-06-25 · Updated 2026-06-25

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-290.

Summary

Spoofing replies to Recursor might mark an IP of an authoritative server as not supporting EDNS, causing valdiation of DNSSEC records served by that server to fail.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00425 37th percentileScored 2026-11-07

Fix Fixed Recursor (PowerDNS): 5.2.11, 5.3.8, 5.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
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	5.2.0 to before 5.2.11; 5.3.0 to before 5.3.8; 5.4.0 to before 5.4.3	5.2.11, 5.3.8, 5.4.3	Patch available	CNA

Recursor VendorPowerDNS Affected 5.2.0 to before 5.2.11; 5.3.0 to before 5.3.8; 5.4.0 to before 5.4.3 Fixed in 5.2.11, 5.3.8, 5.4.3 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:powerdns:recursor::::::::	—	—	PowerDNS

cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* Versions — — ·PowerDNS

Remediation

Fix · CNA Recursor (PowerDNS) Fixed in 5.2.11, 5.3.8, 5.4.3

Fixed in the same release

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

Release · 2026-06-25
PowerDNS Recursor 5.2.11, 5.3.8, 5.4.3
5 records Highest priority Priority LOW 5 LOW
Other records, highest priority first
- TI-2026-25994 ZoneToCache can poison the cachePriority LOW 32
- TI-2026-28855 Information about ECS zero scoped answers might leak to clients that use a specific ECSPriority LOW 30
- TI-2026-30688 Missing input validation for catalog zonesPriority LOW 27
Show all 5 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-2026-52690
2026-10-03 Alias added: GHSA-c2h5-7f6m-jqmp

References

Other 1

https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-powerdns-2026-08.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-2021-14878 PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by… CVSS 3.1HIGH 7.5
TI-2016-04703 PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . CVSS 3.0HIGH 7.5
TI-2018-12065 Out-of-bounds read in [UNKNOWN] pdns-recursor CVSS 3.0HIGH 7.5

See all 130 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences