CVE-2026-35406: containers aardvark-dns Uncontrolled Resource Consumption
CVSS: 7.5v3.1HighAnalyzed
AliasesRHSA-2026:36318RHSA-2026:36782UBUNTU-CVE-2026-35406DEBIAN-CVE-2026-35406openSUSE-SU-2026:10570-1GHSA-hfpq-x728-986j
Published 07-04-2026Last modified 08-04-2026
Vulnerability summary
CVE-2026-35406 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in containers aardvark-dns. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.2% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (NVD)EPSS score
0.46%
0%100%
Low · +0.07 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 1Timeline
- 07-04-2026PublishedVulnerability first disclosed.
- 08-04-2026Last modifiedVulnerability information updated.
Description
Aardvark-dns is an authoritative dns server for A/AAAA container records. From 1.16.0 to 1.17.0, a truncated TCP DNS query followed by a connection reset causes aardvark-dns to enter an unrecoverable infinite error loop at 100% CPU. This vulnerability is fixed in 1.17.1.
CVSS metrics
6 scores · 6 sources · 1 versionHigh 7.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSources6 sources · 6.2–7.5
- CVE.orgCNA6.2MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · Red hatEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · Crates.ioEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.46%
Chance of exploitation in the next 30 days
Percentile
38%
Versus all other CVEs
30-day change
+0.07 pp
From 0.38% on 19-09-2026
19-09-202619-10-2026
EPSS score0.46%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-835Loop with Unreachable Exit Condition ('Infinite Loop')The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.
Affected systems
Redhat3 products
- aardvark-dns< 2:1.17.1-1.el9_8 | < 2:1.17.1-1.el10_2
- aardvark-dns-debuginfo< 2:1.17.1-1.el9_8 | < 2:1.17.1-1.el10_2
- aardvark-dns-debugsource< 2:1.17.1-1.el9_8 | < 2:1.17.1-1.el10_2
Containers1 product
- aardvark-dns≥ 1.16.0, < 1.17.1
Crates.Io1 product
- netavark≥ 1.16.0, < 1.17.1
Debian1 product
- aardvark-dns< 1.16.0-3
Opensuse1 product
- aardvark-dns&distro=openSUSE Tumbleweed< 1.17.1-1.1
Ubuntu1 product
- aardvark-dnsAll versions (No fix recorded)
6 vendors · 8 products
References
16 links- github.com/containers/aardvark-dns/security/advisories/GHSA-hfpq-x728-986jX Refsource CONFIRMARTICLEREPORTWEBPatchVendor Advisory
- github.com/containers/aardvark-dns/commit/3b49ea7b38bdea134b7f03256f2e13f44ce73bb1X Refsource MISCARTICLEREPORTWEBPatch
- github.com/containers/aardvark-dns/releases/tag/v1.17.1X Refsource MISCARTICLEREPORTWEBRelease Notes
