How severe is CVE-2020-29070?

CVE-2020-29070 has a CVSS 3.x base score of 4.8, rated medium 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-2020-29070 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-2020-29070?

CVE-2020-29070 affects Oscommerce. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-29070?

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

When was CVE-2020-29070 published?

CVE-2020-29070 was published on 2020-11-25 and last updated on 2026-06-17.

CVE-2020-29070

CVE-2020-29070 is a medium-severity vulnerability in Oscommerce with a CVSS 3.x base score of 4.8. 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 4.8)
CVSS v2: 3.5
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Oscommerce
Published: 2020-11-25
Last modified: 2026-06-17

Description

osCommerce 2.3.4.1 has XSS vulnerability via the authenticated user entering the XSS payload into the title section of newsletters.

Frequently asked questions

What is CVE-2020-29070?: osCommerce 2.3.4.1 has XSS vulnerability via the authenticated user entering the XSS payload into the title section of newsletters.
How severe is CVE-2020-29070?: CVE-2020-29070 has a CVSS 3.x base score of 4.8, rated medium 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-2020-29070 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-2020-29070?: CVE-2020-29070 affects Oscommerce. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-29070?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-29070 published?: CVE-2020-29070 was published on 2020-11-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oscommerce:oscommerce:2.3.4.1:*:*:*:*:*:*:*

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