CVE-2023-26819: cjson_project cjson Expected Behavior Violation
CVSS: 2.9v3.1LowModified
AliasesUBUNTU-CVE-2023-26819DEBIAN-CVE-2023-26819
Published 19-04-2025Last modified 03-11-2025
Vulnerability summary
CVE-2023-26819 is a low (CVSS 2.9) Expected Behavior Violation vulnerability in cjson_project cjson. EPSS estimates a 0.23% chance of exploitation in the next 30 days, higher than 13.4% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
2.9/10
010
Low · v3.1 (CVE.org)EPSS score
0.23%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 5 · Related 4Timeline
- 19-04-2025PublishedVulnerability first disclosed.
- 03-11-2025Last modifiedVulnerability information updated.
Description
cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.
CVSS metrics
4 scores · 4 sources · 1 versionLow 2.9Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:LSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated2.9LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- OSV · DebianEcosystem advisory · calculated2.9LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- NVDNIST2.9LowCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS trend
Probability
0.23%
Chance of exploitation in the next 30 days
Percentile
13%
Versus all other CVEs
30-day change
0.00 pp
From 0.23% on 19-09-2026
19-09-202619-10-2026
EPSS score0.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundJson Bugs
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Cjson_project1 product
- cjson1.7.15
Debian1 product
- cjson< 1.7.15-1+deb12u3 | < 1.7.18-3.1
Ubuntu1 product
- cjson< 1.7.10-1.1ubuntu0.1~esm1 | < 1.7.15-1ubuntu0.1 | < 1.7.17-1ubuntu0.1~esm3
3 vendors · 3 products
