Dashboard / CVE-2026-123598

CVE-2026-123598

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 73/100
Published: 2026-11-08 Modified: 2026-11-10 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: Present
VC: None
VI: None
VA: Low

Description

The validating recursor in Hickory DNS hickory-recursor 0.25.0 through 0.26.0-alpha.1, hickory-resolver 0.26.0-alpha.1 before 0.26.2, and hickory-net 0.26.0-beta.1 before 0.26.2 caches DNSSEC-bogus answers using the untrusted, attacker-supplied record TTL (capped at 24 hours) instead of a short validation-failure TTL. A remote attacker who spoofs a single authoritative response with an invalid signature and a long TTL can keep the bogus result cached for up to 24 hours.

Weakness Classification (1)

Affected Software (6)

VendorProductVersion
hickory-dns hickory-dns 0.25.0
hickory-dns hickory-dns 0.26.0-alpha.1 < 0.26.2
hickory-dns hickory-dns 0.26.0-beta.1 < 0.26.2
hickory-dns hickory-dns 0.25.0
hickory-dns hickory-dns 0.26.0-alpha.1 < 0.26.2
hickory-dns hickory-dns 0.26.0-beta.1 < 0.26.2

References & Advisories (2)

Bug Bounty Relevance

73 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.27%
Raw Score 0.002660
Percentile 18.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00266
2026-11-12
0.00266
2026-11-10
0.00266
2026-11-09
0.00266
2026-11-08
0.00266

Intelligence Sources

mitre ref →
nvd ref →

External Links