How severe is CVE-2020-17476?

CVE-2020-17476 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-2020-17476 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-2020-17476?

CVE-2020-17476 affects Mibew Messenger. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-17476?

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

When was CVE-2020-17476 published?

CVE-2020-17476 was published on 2020-08-10 and last updated on 2026-06-17.

CVE-2020-17476

CVE-2020-17476 is a medium-severity vulnerability in Mibew Messenger 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: Mibew Messenger
Published: 2020-08-10
Last modified: 2026-06-17

Description

Mibew Messenger before 3.2.7 allows XSS via a crafted user name.

Frequently asked questions

What is CVE-2020-17476?: Mibew Messenger before 3.2.7 allows XSS via a crafted user name.
How severe is CVE-2020-17476?: CVE-2020-17476 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-2020-17476 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-2020-17476?: CVE-2020-17476 affects Mibew Messenger. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-17476?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-17476 published?: CVE-2020-17476 was published on 2020-08-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:mibew:messenger:*:*:*:*:*:*:*:*

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