How severe is CVE-2020-13258?

CVE-2020-13258 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-2020-13258 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13258?

CVE-2020-13258 affects Contentful Python Example. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13258?

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

When was CVE-2020-13258 published?

CVE-2020-13258 was published on 2020-05-21 and last updated on 2026-06-17.

CVE-2020-13258

CVE-2020-13258 is a medium-severity vulnerability in Contentful Python Example 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: 2% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Contentful Python Example
Published: 2020-05-21
Last modified: 2026-06-17

Description

Contentful through 2020-05-21 for Python allows reflected XSS, as demonstrated by the api parameter to the-example-app.py.

Frequently asked questions

What is CVE-2020-13258?: Contentful through 2020-05-21 for Python allows reflected XSS, as demonstrated by the api parameter to the-example-app.py.
How severe is CVE-2020-13258?: CVE-2020-13258 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-2020-13258 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13258?: CVE-2020-13258 affects Contentful Python Example. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13258?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-13258 published?: CVE-2020-13258 was published on 2020-05-21 and last updated on 2026-06-17.

References

https://github.com/contentful/the-example-app.py/issues/44

Affected products (1)

cpe:2.3:a:contentful:python_example:*:*:*:*:*:*:*:*

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