CVE-2022-42227 json
jsonlint 1.0 is vulnerable to heap-buffer-overflow via /home/hjsz/jsonlint/src/lexer.
published 2022-10-19 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-45303
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.2%
- EPSS 1.2% chance of exploitation in 30 days, percentile 67%
- public exploits
- 0
- none known
Summary
jsonlint 1.0 is vulnerable to heap-buffer-overflow via /home/hjsz/jsonlint/src/lexer.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 18 mo ago
Exploit prediction
1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/p-ranav/jsonlint/issues/2 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/yangfar/CVE/blob/main/CVE-2022-42227.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/p-ranav/jsonlint/issues/2
exploit, third-party-advisory
-
github.com
/yangfar/CVE/blob/main/CVE-2022-42227.md
exploit, third-party-advisory
Sources
- CVE List CVE-2022-42227
- NVD CVE-2022-42227
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.