CVE-2022-45494 json
Buffer overflow vulnerability in function json_parse_object in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (Novem…
published 2023-01-31 3 y ago modified 2026-06-17 4 mo ago also EUVD-2022-48360
- cvss
- 7.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 35%
- public exploits
- 0
- none known
Summary
Buffer overflow vulnerability in function json_parse_object in sheredom json.h before commit 0825301a07cbf51653882bf2b153cc81fdadf41 (November 14, 2022) allows attackers to code arbitrary code and gain escalated privileges.
Patch / fix
- json.h_project json.h 2022-11-14
- github.com/sheredom/json.h/issues/93 advisory
- github.com/sheredom/json.h/issues/97 advisory
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 19 mo ago
Exploit prediction
0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/hyrathon/trophies/security/advisories/GHSA-wvpq-p7pp-cj6m referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/sheredom/json.h/issues/93
issue-tracking, patch, third-party-advisory
-
github.com
/sheredom/json.h/issues/97
issue-tracking, patch, third-party-advisory
-
github.com
/hyrathon/trophies/security/advisories/GHSA-wvpq-p7pp-cj6m
exploit, third-party-advisory
-
github.com
/sheredom/json.h
product, third-party-advisory
Sources
- CVE List CVE-2022-45494
- NVD CVE-2022-45494
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.