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TI-2026-80507 Aliases CVE-2026-72752GHSA-9hhm-hxh6-hwxr

Routinator exits when JSON output is requested repeatedly

Priority LOW 28CWE-755Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

NLnet Labs Routinator can run out of memory and exit when the JSON output is requested many times concurrently, or when a payload item with too much metadata is discarded at once. The flaw is improper handling of exceptional conditions (CWE-755), which leads to memory exhaustion and a stack overflow. An attacker with no privileges can trigger the memory exhaustion by opening a large number of connections to the HTTP server, and only deployments that make their HTTP or RTR server available to untrusted networks are affected.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Routinator runs out of memory when the JSON output is requested many times concurrently. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server. Additionally Routinator runs into a stack overflow and exits when a payload item with too much metadata is discarded at once. This only affects users that make their HTTP or RTR server available to untrusted networks.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00241 15th percentileScored 2026-11-07
Fix Fixed Routinator (NLnet Labs): 0.15.3

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

VendorProductAffected versionsFixed inStatusSource
NLnet LabsRoutinator—0.15.3Patch availableCNA
  • Routinator VendorNLnet Labs Affected — Fixed in 0.15.3 Patch available CNA

CPE names Threatist (inferred) · 1

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

CPEVersionsRoleVendor
cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:*——NLNETLABS
  • cpe:2.3:a:nlnetlabs:routinator:*:*:*:*:*:*:*:* Versions — — ·NLNETLABS

Remediation

Upgrade Routinator to version 0.15.3.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Routinator (NLnet Labs) Fixed in 0.15.3

Timeline

  1. 2026-10-26 Threatist record created from CVE-2026-72752
  2. 2026-10-26 CISA SSVC decision points changed
  3. 2026-10-26 Priority changed: MEDIUM → LOW
  4. 2026-10-27 Alias added: GHSA-9hhm-hxh6-hwxr

References

Advisory 1

  • TI-2026-25690 Possible arbitrary code execution during DNSSEC validation CVSS 4.0CRITICAL 9.1
  • TI-2026-56302 Heap buffer overflow and possible Remote Code Execution when digesting DNSKEY CVSS 4.0CRITICAL 9.1
  • TI-2026-31146 Crash during DNSSEC validation of malicious content CVSS 4.0HIGH 8.7
  • TI-2026-31135 Heap overflow with multiple NSID, COOKIE, PADDING EDNS options CVSS 4.0HIGH 8.7
  • TI-2026-36436 Routinator crashes on specifically crafted RRDP XML files CVSS 4.0HIGH 8.7
  • TI-2026-36433 Routinator exits when accepting an incoming HTTP or RTR connection fails CVSS 4.0HIGH 8.7
See all 96 →

Sources

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