TI-2026-44989 Aliases CVE-2026-62985 GHSA-r3r9-wp5j-pq5g

request-filtering-agent: Synchronous throw from createConnection() for literal private-IP…

HIGH 66CWE-248Published 2026-09-22 · Updated 2026-09-26

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-248.

Summary

request-filtering-agent is an http(s).Agent implementation that blocks requests to Private/Reserved IP addresses. Prior to 3.2.1, RequestFilteringHttpAgent and RequestFilteringHttpsAgent synchronously threw from createConnection when rejecting a literal private-IP host such as 169.254.169.254 or 127.0.0.1. Because Node.js http.request and http.get expect connection failures to be delivered asynchronously, the throw bypassed req.on('error') and became an uncaught exception that could terminate the application process. Hostnames resolved through the asynchronous lookup path were not affected by this error-delivery asymmetry. This issue is fixed in version 3.2.1.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00564 47th percentileScored 2026-11-07

Fix Fixed request-filtering-agent (azu): 3.2.1request-filtering-agent (npm): 3.2.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
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
azu	request-filtering-agent	before 3.2.1	3.2.1	Patch available	CNA
—	request-filtering-agent (npm)	before 3.2.1	3.2.1	Patch available	GHSA-r3r9-wp5j-pq5g

request-filtering-agent Vendorazu Affected before 3.2.1 Fixed in 3.2.1 Patch available CNA
request-filtering-agent (npm) Vendor— Affected before 3.2.1 Fixed in 3.2.1 Patch available GHSA-r3r9-wp5j-pq5g

Remediation

Fix · CNA request-filtering-agent (azu) Fixed in 3.2.1
Fix · GHSA-r3r9-wp5j-pq5g request-filtering-agent (npm) Fixed in 3.2.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-62985
2026-10-03 Alias added: GHSA-r3r9-wp5j-pq5g

References

Other 4

TI-2025-35697 request-filtering-agent SSRF Bypass via HTTPS Requests CVSS 4.0MEDIUM 5.5

Sources

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