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No exploitation reportedFix available

CVE-2021-23820

No exploitation reported by the sources we read.

  • Published2021-11-03
  • Fixed in0.6.2
  • WeaknessCWE-843

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

This affects all versions of package json-pointer. A type confusion vulnerability can lead to a bypass of CVE-2020-7709 when the pointer components are arrays.

Timeline

dates in UTC
  1. 2021-11-0318:15CVE publishedNVD

Versions per branch

NVD · OSV
Manuelstofer json-pointer
BranchAffectedFixed in
0.6< 0.6.20.6.2

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • py3-jsonpointerWolfiall versions · fixed in 0and 4 other packages
  • py3-jsonpointerChainguardall versions · fixed in 0and 4 other packages

Vendor advisories

  • CVE-2021-23820 Red Hat Product Security5 products fixed

    json-pointer: type confusion vulnerability can lead to a bypass of CVE-2020-7709 when the pointer components are arrays

  • RHSA-2022:4880 Red Hat Product Security5 products fixed

    Red Hat Security Advisory: ACS 3.70 enhancement and security update

Full record on NVD

Fix

  1. Update Manuelstofer json-pointer to 0.6.2
  2. Vendor fix Red Hat Product Security RHSA-2022:4880 · 5 productsTo take advantage of the new features, bug fixes, and enhancements in RHACS 3.70 you are advised to upgrade to RHACS 3.70.0.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 3.15.6known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • NVDCVSS 2.07.5read 2026-10-23
  • NVDweakness (CWE)CWE-843read 2026-10-23
  • FIRST EPSSEPSS score1.9 %2026-11-09
  • OSVaffected packages—
  • GitHub AdvisoriesadvisoryMODERATE2021-11-04

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-11-03
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-v5vg-g7rq-363w

Frequently asked questions

What is CVE-2021-23820?

This affects all versions of package json-pointer. A type confusion vulnerability can lead to a bypass of CVE-2020-7709 when the pointer components are arrays.

Is CVE-2021-23820 actively exploited?

Active exploitation of CVE-2021-23820 has not been confirmed. Its EPSS score was 1.9% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2021-23820?

CVE-2021-23820 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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