How severe is CVE-2020-11103?

CVE-2020-11103 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-11103 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11103?

CVE-2020-11103 primarily affects Webswing. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-11103?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-11103 published?

CVE-2020-11103 was published on 2020-12-30 and last updated on 2026-06-17.

CVE-2020-11103

CVE-2020-11103 is a critical-severity vulnerability in Webswing with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Webswing
Published: 2020-12-30
Last modified: 2026-06-17

Description

JsLink in Webswing before 2.6.12 LTS, and 2.7.x and 20.x before 20.1, allows remote code execution.

Frequently asked questions

What is CVE-2020-11103?: JsLink in Webswing before 2.6.12 LTS, and 2.7.x and 20.x before 20.1, allows remote code execution.
How severe is CVE-2020-11103?: CVE-2020-11103 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-11103 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11103?: CVE-2020-11103 primarily affects Webswing. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-11103?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-11103 published?: CVE-2020-11103 was published on 2020-12-30 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:webswing:webswing:*:*:*:*:lts:*:*:*
cpe:2.3:a:webswing:webswing:*:*:*:*:-:*:*:*

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