CVE-2022-29780Public exploit

Local process crash via comparator-mutated array

Published May 27, 2022 · Updated Aug 3, 2024

Denial of service in NGINX njs 0.7.2 allows local users to crash an njs process by sorting an array with a state-changing comparator. njs_array_prototype_sort retains its initial fast-path flag after the comparator converts the receiver to a slow array, then accesses invalid fast-array storage during memcpy. The demonstrated path requires permission to run a crafted script in the standalone njs shell; remote request data alone is not shown to trigger the crash.

CVSS severity5.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in NGINX njs 0.7.2 allows local users to crash an njs process by sorting an array with a state-changing comparator. njs_array_prototype_sort retains its initial fast-path flag after the comparator converts the receiver to a slow array, then accesses invalid fast-array storage during memcpy. The demonstrated path requires permission to run a crafted script in the standalone njs shell; remote request data alone is not shown to trigger the crash.

The record

CVE
CVE-2022-29780
Published
May 27, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 27, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
2.1NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:P

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)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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