How severe is CVE-2022-21158?

CVE-2022-21158 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2022-21158 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21158?

CVE-2022-21158 affects Marktext. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-21158?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-21158 published?

CVE-2022-21158 was published on 2022-03-10 and last updated on 2026-06-17.

CVE-2022-21158

CVE-2022-21158 is a medium-severity vulnerability in Marktext with a CVSS 3.x base score of 5.4. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
CVSS v2: 3.5
EPSS exploit prediction: 1% (41st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Marktext
Published: 2022-03-10
Last modified: 2026-06-17

Description

A stored cross-site scripting vulnerability in marktext versions prior to v0.17.0 due to improper handling of the link (with javascript: scheme) inside the document may allow an attacker to execute an arbitrary script on the PC of the user using marktext.

Frequently asked questions

What is CVE-2022-21158?: A stored cross-site scripting vulnerability in marktext versions prior to v0.17.0 due to improper handling of the link (with javascript: scheme) inside the document may allow an attacker to execute an arbitrary script on the PC of the user using marktext.
How severe is CVE-2022-21158?: CVE-2022-21158 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2022-21158 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21158?: CVE-2022-21158 affects Marktext. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-21158?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-21158 published?: CVE-2022-21158 was published on 2022-03-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:marktext:marktext:*:*:*:*:*:*:*:*

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