CVE-2022-36127Network attack vector

Service crash via unvalidated sw8 header

Published Jul 18, 2022 · Updated Aug 3, 2024

Improper header validation in Apache SkyWalking Node.js Agent 0.5.0 and earlier allows remote attackers to crash Node.js services. ContextCarrier.from passes fields from an unvalidated sw8 trace header into the value setter, where a missing encoded field reaches Buffer.from as undefined and throws a TypeError. The path is reachable when upstream tracing supplies an invalid context, including during an unhealthy OAP connection or downstream sampling, and the uncaught exception exits the instrumented service.

CVSS severity7.5
High
EPSS probability1.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper header validation in Apache SkyWalking Node.js Agent 0.5.0 and earlier allows remote attackers to crash Node.js services. ContextCarrier.from passes fields from an unvalidated sw8 trace header into the value setter, where a missing encoded field reaches Buffer.from as undefined and throws a TypeError. The path is reachable when upstream tracing supplies an invalid context, including during an unhealthy OAP connection or downstream sampling, and the uncaught exception exits the instrumented service.

The record

CVE
CVE-2022-36127
Published
Jul 18, 2022
Updated
Aug 3, 2024
Vendor
The Apache Software Foundation
Product
Apache SkyWalking Node.js Agent
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache SkyWalking NodeJS Agent <=0.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache SkyWalking Node.js Agentversion=Apache SkyWalking NodeJS Agent <=0.5.0

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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