CVE-2018-0499: A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4

Q: How do I fix CVE-2018-0499?

xapian-core: upgrade to 1.4.6; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2018-0499 being exploited?

CVE-2018-0499 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-0499 affect?

CVE-2018-0499 affects xapian-core, ubuntu linux. Severity is medium (CVSS 6.1). A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet().

Q: How urgent is CVE-2018-0499?

Priority 42/100. On your watchlist

This month

MEDIUM 6.1WATCHLISTUPGRADEMITIGATE

CVE-2018-0499 is a medium-severity flaw (CVSS 6.1) affecting xapian-core, ubuntu linux. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet().

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 36%)
CISA exploited list	No
Weakness	CWE-79
Published	2018-07-02
Last modified	2026-06-17

Publisher (CNA): Debian GNU/Linux · Vendor: canonical · xapian

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-07-02 12:29 UTCPublished CVE record published
2026-06-17 01:30 UTCUpdated Record last modified

xapian xapian-core UPGRADE

Affected: < 1.4.6

Fixed in: 1.4.6

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy xapian-core || rpm -q xapian-core || xapian-core --version

2. UPGRADE to 1.4.6 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade xapian-core

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade xapian-core

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

canonical ubuntu linux MITIGATE

Affected: 17.10 · 18.04

Fixed in: no fixed release known

Safe to downgrade to: a release before 17.10

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-0499?

xapian-core: upgrade to 1.4.6; ubuntu linux: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2018-0499 being exploited?

CVE-2018-0499 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-0499 affect?

CVE-2018-0499 affects xapian-core, ubuntu linux. Severity is medium (CVSS 6.1). A cross-site scripting vulnerability in queryparser/termgenerator_internal.cc in Xapian xapian-core before 1.4.6 exists due to incomplete HTML escaping by Xapian::MSet::snippet().

How urgent is CVE-2018-0499?

Priority 42/100. On your watchlist

Software pages

Ubuntu vulnerabilities

References

← Back to latest CVEs