How severe is CVE-2018-1000162?

CVE-2018-1000162 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2018-1000162 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000162?

CVE-2018-1000162 affects Parsedown. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000162?

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

When was CVE-2018-1000162 published?

CVE-2018-1000162 was published on 2018-04-18 and last updated on 2026-06-17.

CVE-2018-1000162

CVE-2018-1000162 is a medium-severity vulnerability in Parsedown with a CVSS 3.x base score of 6.1. 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 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (64th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Parsedown
Published: 2018-04-18
Last modified: 2026-06-17

Description

Parsedown version prior to 1.7.0 contains a Cross Site Scripting (XSS) vulnerability in `setMarkupEscaped` for escaping HTML that can result in JavaScript code execution. This attack appears to be exploitable via specially crafted markdown that allows it to side step HTML escaping by breaking AST boundaries. This vulnerability appears to have been fixed in 1.7.0 and later.

Frequently asked questions

What is CVE-2018-1000162?: Parsedown version prior to 1.7.0 contains a Cross Site Scripting (XSS) vulnerability in `setMarkupEscaped` for escaping HTML that can result in JavaScript code execution. This attack appears to be exploitable via specially crafted markdown that allows it to side step HTML escaping by breaking AST boundaries. This vulnerability appears to have been fixed in 1.7.0 and later.
How severe is CVE-2018-1000162?: CVE-2018-1000162 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2018-1000162 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000162?: CVE-2018-1000162 affects Parsedown. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000162?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000162 published?: CVE-2018-1000162 was published on 2018-04-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:parsedown:parsedown:*:*:*:*:*:*:*:*

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