How severe is CVE-2020-15788?

CVE-2020-15788 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-2020-15788 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-15788?

CVE-2020-15788 affects Siemens Polarion Subversion Webclient. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-15788?

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

When was CVE-2020-15788 published?

CVE-2020-15788 was published on 2020-09-09 and last updated on 2026-06-17.

CVE-2020-15788

CVE-2020-15788 is a medium-severity vulnerability in Siemens Polarion Subversion Webclient 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Siemens Polarion Subversion Webclient
Published: 2020-09-09
Last modified: 2026-06-17

Description

A vulnerability has been identified in Polarion Subversion Webclient (All versions). The Polarion subversion web application does not filter user input in a way that prevents Cross-Site Scripting. If a user is enticed into passing specially crafted, malicious input to the web client (e.g. by clicking on a malicious URL with embedded JavaScript), then JavaScript code can be returned and may then be executed by the user’s client. Various actions could be triggered by running malicious JavaScript code.

Frequently asked questions

What is CVE-2020-15788?: A vulnerability has been identified in Polarion Subversion Webclient (All versions). The Polarion subversion web application does not filter user input in a way that prevents Cross-Site Scripting. If a user is enticed into passing specially crafted, malicious input to the web client (e.g. by clicking on a malicious URL with embedded JavaScript), then JavaScript code can be returned and may then be executed by the user’s client. Various actions could be triggered by running malicious JavaScript code.
How severe is CVE-2020-15788?: CVE-2020-15788 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-2020-15788 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-15788?: CVE-2020-15788 affects Siemens Polarion Subversion Webclient. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-15788?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-15788 published?: CVE-2020-15788 was published on 2020-09-09 and last updated on 2026-06-17.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-436520.pdf

Affected products (1)

cpe:2.3:a:siemens:polarion_subversion_webclient:*:*:*:*:*:*:*:*

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