How severe is CVE-2020-8952?

CVE-2020-8952 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-2020-8952 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-8952?

CVE-2020-8952 affects Fiserv Accurate Reconciliation. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-8952?

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

When was CVE-2020-8952 published?

CVE-2020-8952 was published on 2020-02-26 and last updated on 2026-06-17.

CVE-2020-8952

CVE-2020-8952 is a medium-severity vulnerability in Fiserv Accurate Reconciliation 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% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Fiserv Accurate Reconciliation
Published: 2020-02-26
Last modified: 2026-06-17

Description

Fiserv Accurate Reconciliation 2.19.0, fixed in 3.0.0 or higher, allows XSS via the logout.jsp timeOut parameter.

Frequently asked questions

What is CVE-2020-8952?: Fiserv Accurate Reconciliation 2.19.0, fixed in 3.0.0 or higher, allows XSS via the logout.jsp timeOut parameter.
How severe is CVE-2020-8952?: CVE-2020-8952 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-2020-8952 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8952?: CVE-2020-8952 affects Fiserv Accurate Reconciliation. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8952?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-8952 published?: CVE-2020-8952 was published on 2020-02-26 and last updated on 2026-06-17.

References

https://github.com/eSecure-CVEs/CVEs/blob/master/CVE-2020-8952

Affected products (1)

cpe:2.3:a:fiserv:accurate_reconciliation:*:*:*:*:*:*:*:*

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