CVE-2022-4742: A vulnerability, which was classified as critical, has been found in json-pointer up to 0.6.1

Q: How do I fix CVE-2022-4742?

json-pointer: upgrade to 2022-2-17. Exact commands for each OS are on this page.

Q: Is CVE-2022-4742 being exploited?

CVE-2022-4742 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2022-4742 affect?

CVE-2022-4742 affects json-pointer. Severity is medium (CVSS 6.3). A vulnerability, which was classified as critical, has been found in json-pointer up to 0.6.1. Affected by this issue is the function set of the file index.js. The manipulation leads to improperly controlled modification of object prototype

Q: How urgent is CVE-2022-4742?

Priority 38/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2022-4742 is a medium-severity flaw (CVSS 6.3) affecting json-pointer. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability, which was classified as critical, has been found in json-pointer up to 0.6.1. Affected by this issue is the function set of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The attack may be launched remotely. Upgrading to version 0.6.2 is able to address this issue. The patch is identified as 859c9984b6c407fc2d5a0a7e47c7274daa681941. It is rec

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.1% (top 34%)
CISA exploited list	No
Weakness	CWE-1321
Published	2022-12-26
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: json-pointer project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-12-26 08:15 UTCPublished CVE record published
2026-06-17 05:21 UTCUpdated Record last modified

json-pointer project json-pointer UPGRADE

Affected: < 2022-2-17

Fixed in: 2022-2-17

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy json-pointer || rpm -q json-pointer || json-pointer --version

2. UPGRADE to 2022-2-17 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade json-pointer

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade json-pointer

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-4742?

json-pointer: upgrade to 2022-2-17. Exact commands for each OS are on this page.

Is CVE-2022-4742 being exploited?

CVE-2022-4742 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-4742 affect?

CVE-2022-4742 affects json-pointer. Severity is medium (CVSS 6.3). A vulnerability, which was classified as critical, has been found in json-pointer up to 0.6.1. Affected by this issue is the function set of the file index.js. The manipulation leads to improperly controlled modification of object prototype

How urgent is CVE-2022-4742?

Priority 38/100. No elevated risk signals yet.

Related CVEs

CVE-2021-23820 MEDIUM 5.6 UPGRADE This affects all versions of package json-pointer
CVE-2020-7709 MEDIUM 6.0 UPGRADE This affects the package json-pointer before 0.6.1

References

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