🛡️ CVE-2021-42248 — gjson

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-1333 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Duplicate Advisory: ReDoS via crafted JSON input in GJSON

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-ppj4-34rq-v8j9. This link is maintained to preserve external references.

Original Description

GJSON <= 1.9.2 allows attackers to cause a redos via crafted JSON input.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2021-42248 is classified as CWE-1333: Inefficient Regular Expression Complexity. A regular expression backtracks catastrophically on crafted input, consuming CPU out of proportion to input size.

Affected software

CVE-2021-42248 is recorded against 1 package.

  • github.com/tidwall/gjson

Timeline and source

Published on 25 May 2022 and last revised on 20 May 2024. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Web)
github.com (Package)
pkg.go.dev (Web)

CVE-2021-42248 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE CWE-1333
Public Exploit ✅ No
Source OSV
Published 2022-05-25
Updated 2026-08-12
Modified 2024-05-20

Affected Packages

Software From version Fixed in
github.com/tidwall/gjson — —

Similar Threats

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