How severe is CVE-2020-11083?

CVE-2020-11083 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2020-11083 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11083?

CVE-2020-11083 affects Octobercms October. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11083?

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

When was CVE-2020-11083 published?

CVE-2020-11083 was published on 2020-07-14 and last updated on 2026-06-17.

CVE-2020-11083

CVE-2020-11083 is a low-severity vulnerability in Octobercms October with a CVSS 3.x base score of 3.5. 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-79.

Key facts

Severity: Low (CVSS 3.x base score 3.5)
CVSS v2: 3.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Octobercms October
Published: 2020-07-14
Last modified: 2026-06-17

Description

In October from version 1.0.319 and before version 1.0.466, a user with access to a markdown FormWidget that stores data persistently could create a stored XSS attack against themselves and any other users with access to the generated HTML from the field. This has been fixed in 1.0.466. For users of the RainLab.Blog plugin, this has also been fixed in 1.4.1.

Frequently asked questions

What is CVE-2020-11083?: In October from version 1.0.319 and before version 1.0.466, a user with access to a markdown FormWidget that stores data persistently could create a stored XSS attack against themselves and any other users with access to the generated HTML from the field. This has been fixed in 1.0.466. For users of the RainLab.Blog plugin, this has also been fixed in 1.4.1.
How severe is CVE-2020-11083?: CVE-2020-11083 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2020-11083 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11083?: CVE-2020-11083 affects Octobercms October. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11083?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-11083 published?: CVE-2020-11083 was published on 2020-07-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:octobercms:october:*:*:*:*:*:*:*:*

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