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CVE-2018-1000998

19
FAUCET Score

CVE-2018-1000998 is a Cross-Site Scripting (XSS) vulnerability affecting FreeBSD CVSweb versions 2.x. This flaw allows an attacker to inject malicious scripts into web pages, primarily impacting the victim through specially crafted URLs. While CVSweb is read-only and anonymous, the XSS could affect other sites on the same domain. The vulnerability has a CVSSv3 score of 6.1 (Medium), indicating a network-based attack with low complexity, requiring user interaction, and resulting in low impact to confidentiality and integrity. The EPSS score is very low, suggesting a minimal likelihood of exploitation. There is no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit or Nuclei, or entries in ExploitDB. Community discussion and media coverage for this CVE are also non-existent, aligning with the typical low attention for most vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.4, <= 2.0.6CPE matchmatch criteria
cpe:2.3:a:freebsd:cvsweb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 65th percentile among its peer group of 26,220 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

kvakil.me / posts/cvsweb
ExploitThird Party Advisory