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CVE-2018-0499

22
FAUCET Score

CVE-2018-0499 is a cross-site scripting (XSS) vulnerability affecting Xapian xapian-core versions prior to 1.4.6, specifically due to incomplete HTML escaping in the Xapian::MSet::snippet() function. This medium-severity vulnerability (CVSS 6.1) can be exploited remotely with low complexity, requiring user interaction, and could lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.6CPE matchmatch criteria
cpe:2.3:a:xapian:xapian-core:*:*:*:*:*:*:*:*
17.10CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*

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
1.45%
Probability of exploitation in next 30 days
EPSS Percentile
70.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0145 is in the 83rd percentile among its peer group of 26,219 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

Patch Available

Vendor Patches (1)

rubygemspatch availablevia ghsa
Product: xapian-coreFixed in: 1.4.6

Vendor Advisories (2)

rubygemsGHSA-7qw4-w7hf-22q3medium

xapian-core Cross-site Scripting vulnerability

May 14, 2022
redhatCVE-2018-0499Moderate

xapian-core: Cross-site-scripting in queryparser/termgenerator_internal.cc

Jul 2, 2018

References

lists.xapian.org / pipermail/xapian-discuss/2018-July/009652.html
Mailing ListVendor Advisory
trac.xapian.org / wiki/SecurityFixes/2018-07-02
PatchVendor Advisory
usn.ubuntu.com / 3709-1
Third Party Advisory