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CVE-2022-23459

30
FAUCET Score

CVE-2022-23459 is a critical memory corruption vulnerability affecting Jsonxx (Json++) C++ JSON parser, writer, and reader. It allows for double free or use-after-free conditions due to improper handling of pointer types within the Value class, potentially leading to severe system compromise. With a CVSS score of 9.8 (Critical), this vulnerability is remotely exploitable with low attack complexity, enabling full confidentiality, integrity, and availability impact. Despite its severity, there is currently no evidence of active exploitation, public exploit code, or significant community discussion, and the affected project is archived with no expected updates.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:hjiang:json\+\+:1.0.0:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:hjiang:json\+\+:1.0.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.85%
Probability of exploitation in next 30 days
EPSS Percentile
54.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0085 is in the 39th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

securitylab.github.com / advisories/GHSL-2022-048_Jsonxx
Broken Link