CVE-2021-3822

CVE-2021-3822 is a high-severity vulnerability in Jsoneditoronline Jsoneditor with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Description

jsoneditor is vulnerable to Inefficient Regular Expression Complexity

Frequently asked questions

What is CVE-2021-3822?
jsoneditor is vulnerable to Inefficient Regular Expression Complexity
How severe is CVE-2021-3822?
CVE-2021-3822 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-3822 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-3822?
CVE-2021-3822 affects Jsoneditoronline Jsoneditor. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-3822?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-3822 published?
CVE-2021-3822 was published on 2021-09-27 and last updated on 2026-06-17.

References

Affected products (1)

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