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VulnerabilityPublished Updated

CVE-2026-62985: azu request-filtering-agent · Uncaught Exception

Affects azu request-filtering-agentSource CVE Database V5

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Not known to be exploited · CVSS 7.5 High : upgrade to 3.2.1 soon.

Data as of 5 Nov 2026, 23:24 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.5% chance of exploitation in 30 days – higher than 47% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.2.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 22 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Upgrade request-filtering-agent and azu/request-filtering-agent to 3.2.1.

Affected software

ProductAffectedFixed in
azurequest-filtering-agentAffected
  • <3.2.1
Fixed in
  • 3.2.1
npmazu/request-filtering-agentpkg:npm/azu/request-filtering-agentOther threatsAffected
  • <3.2.1
Fixed in
  • 3.2.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to azu request-filtering-agent version 3.2.1 or later, where this issue is fixed. No other mitigation is required as the fix addresses the root cause by ensuring exceptions are delivered asynchronously as expected.

Description

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.

References

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