How severe is CVE-2018-1000998?

CVE-2018-1000998 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-2018-1000998 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1000998?

CVE-2018-1000998 affects Freebsd Cvsweb. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-1000998?

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

When was CVE-2018-1000998 published?

CVE-2018-1000998 was published on 2019-02-04 and last updated on 2026-06-17.

CVE-2018-1000998

CVE-2018-1000998 is a medium-severity vulnerability in Freebsd Cvsweb 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% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Freebsd Cvsweb
Published: 2019-02-04
Last modified: 2026-06-17

Description

FreeBSD CVSweb version 2.x contains a Cross Site Scripting (XSS) vulnerability in all pages that can result in limited impact--CVSweb is anonymous & read-only. It might impact other sites on same domain. This attack appears to be exploitable via victim must load specially crafted url. This vulnerability appears to have been fixed in 3.x.

Frequently asked questions

What is CVE-2018-1000998?: FreeBSD CVSweb version 2.x contains a Cross Site Scripting (XSS) vulnerability in all pages that can result in limited impact--CVSweb is anonymous & read-only. It might impact other sites on same domain. This attack appears to be exploitable via victim must load specially crafted url. This vulnerability appears to have been fixed in 3.x.
How severe is CVE-2018-1000998?: CVE-2018-1000998 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-2018-1000998 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1000998?: CVE-2018-1000998 affects Freebsd Cvsweb. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-1000998?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-1000998 published?: CVE-2018-1000998 was published on 2019-02-04 and last updated on 2026-06-17.

References

https://www.kvakil.me/posts/cvsweb/

Affected products (1)

cpe:2.3:a:freebsd:cvsweb:*:*:*:*:*:*:*:*

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