How severe is CVE-2020-27176?

CVE-2020-27176 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-27176 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-27176?

CVE-2020-27176 affects Marktext. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-27176?

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-2020-27176 published?

CVE-2020-27176 was published on 2020-10-16 and last updated on 2026-06-17.

CVE-2020-27176

CVE-2020-27176 is a high-severity vulnerability in Marktext with a CVSS 3.x base score of 8.3. 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: High (CVSS 3.x base score 8.3)
CVSS v2: 6.8
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Marktext
Published: 2020-10-16
Last modified: 2026-06-17

Description

Mutation XSS exists in Mark Text through 0.16.2 that leads to Remote Code Execution. NOTE: this might be considered a duplicate of CVE-2020-26870; however, it can also be considered an issue in the design of the "source code mode" feature, which parses HTML even though HTML support is not one of the primary advertised roles of the product.

Frequently asked questions

What is CVE-2020-27176?: Mutation XSS exists in Mark Text through 0.16.2 that leads to Remote Code Execution. NOTE: this might be considered a duplicate of CVE-2020-26870; however, it can also be considered an issue in the design of the "source code mode" feature, which parses HTML even though HTML support is not one of the primary advertised roles of the product.
How severe is CVE-2020-27176?: CVE-2020-27176 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-27176 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-27176?: CVE-2020-27176 affects Marktext. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-27176?: 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-2020-27176 published?: CVE-2020-27176 was published on 2020-10-16 and last updated on 2026-06-17.

References

https://github.com/marktext/marktext/issues/2360

Affected products (1)

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

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