How severe is CVE-2017-8920?

CVE-2017-8920 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-2017-8920 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-2017-8920?

CVE-2017-8920 affects Cgiirc Cgi. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8920?

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

When was CVE-2017-8920 published?

CVE-2017-8920 was published on 2017-06-06 and last updated on 2026-06-17.

CVE-2017-8920

CVE-2017-8920 is a medium-severity vulnerability in Cgiirc Cgi 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: Cgiirc Cgi
Published: 2017-06-06
Last modified: 2026-06-17

Description

irc.cgi in CGI:IRC before 0.5.12 reflects user-supplied input from the R parameter without proper output encoding, aka XSS.

Frequently asked questions

What is CVE-2017-8920?: irc.cgi in CGI:IRC before 0.5.12 reflects user-supplied input from the R parameter without proper output encoding, aka XSS.
How severe is CVE-2017-8920?: CVE-2017-8920 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-2017-8920 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-2017-8920?: CVE-2017-8920 affects Cgiirc Cgi. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8920?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8920 published?: CVE-2017-8920 was published on 2017-06-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:cgiirc:cgi\:irc:*:*:*:*:*:*:*:*

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