How severe is CVE-2021-36703?

CVE-2021-36703 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-2021-36703 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-36703?

CVE-2021-36703 affects Htmly. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-36703?

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

When was CVE-2021-36703 published?

CVE-2021-36703 was published on 2021-08-03 and last updated on 2026-06-17.

CVE-2021-36703

CVE-2021-36703 is a medium-severity vulnerability in Htmly 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% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Htmly
Published: 2021-08-03
Last modified: 2026-06-17

Description

The "blog title" field in the "Settings" menu "config" page of "dashboard" in htmly 2.8.1 has a storage cross site scripting (XSS) vulnerability. It allows remote attackers to send an authenticated post HTTP request to admin/config and inject arbitrary web script or HTML through a special website name.

Frequently asked questions

What is CVE-2021-36703?: The "blog title" field in the "Settings" menu "config" page of "dashboard" in htmly 2.8.1 has a storage cross site scripting (XSS) vulnerability. It allows remote attackers to send an authenticated post HTTP request to admin/config and inject arbitrary web script or HTML through a special website name.
How severe is CVE-2021-36703?: CVE-2021-36703 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-2021-36703 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-36703?: CVE-2021-36703 affects Htmly. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-36703?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-36703 published?: CVE-2021-36703 was published on 2021-08-03 and last updated on 2026-06-17.

References

https://github.com/danpros/htmly/issues/481

Affected products (1)

cpe:2.3:a:htmly:htmly:2.8.1:*:*:*:*:*:*:*

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