How severe is CVE-2020-24353?

CVE-2020-24353 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-2020-24353 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24353?

CVE-2020-24353 affects Pega Pega Platform. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24353?

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

When was CVE-2020-24353 published?

CVE-2020-24353 was published on 2020-11-09 and last updated on 2026-06-17.

CVE-2020-24353

CVE-2020-24353 is a medium-severity vulnerability in Pega Pega Platform 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% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Pega Pega Platform
Published: 2020-11-09
Last modified: 2026-06-17

Description

Pega Platform before 8.4.0 has a XSS issue via stream rule parameters used in the request header.

Frequently asked questions

What is CVE-2020-24353?: Pega Platform before 8.4.0 has a XSS issue via stream rule parameters used in the request header.
How severe is CVE-2020-24353?: CVE-2020-24353 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-2020-24353 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24353?: CVE-2020-24353 affects Pega Pega Platform. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24353?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-24353 published?: CVE-2020-24353 was published on 2020-11-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:pega:pega_platform:*:*:*:*:*:*:*:*

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