CVE-2023-26819

Exp

cJSON 1.7.15 might allow a denial of service via a crafted JSON document such as {"a": true, "b": [ null,9999999999999999999999999999999999999999999999912345678901234567]}.

Published: 2025-04-19 Last update: 2025-11-03 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-26819 is rated Exploit Available (50/100): CVSS Low severity, with low exploitation likelihood (EPSS 0.10%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-26819

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-26819

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-13 0.03% 0.10% +0.07%
2 2025-11-21 0.05% 0.03% -0.02%
3 2025-11-18 — 0.05% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-26819

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
2.9 3.1 LOW
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 1.4 1.4 [email protected]

Weakness enumeration for CVE-2023-26819

OS Trackers for CVE-2023-26819

vendor priority summary link
debian not yet assigned CVE-2023-26819 not yet assigned priority: Debian including 1 source packages (cjson), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2023-26819
redhat low — https://access.redhat.com/security/cve/CVE-2023-26819
suse low — https://www.suse.com/security/cve/CVE-2023-26819/
ubuntu medium CVE-2023-26819 medium priority: Ubuntu including 1 source packages (cjson), 7 status rows across 7 suites (focal, jammy, noble, oracular, plucky, questing, upstream): released 4, ignored 2, not-affected 1. https://ubuntu.com/security/CVE-2023-26819

Affected software / configurations for CVE-2023-26819

Vendor Product Version Raw CPE
cjson_project cjson 1.7.15 cpe:2.3:a:cjson_project:cjson:1.7.15:*:*:*:*:*:*:*

References for CVE-2023-26819

cvelogic Threat Intelligence