CVE-2016-4847: Cross-site scripting (XSS) vulnerability in site/search.php in OSSEC Web UI before 0.9 allows remote attackers

Q: How do I fix CVE-2016-4847?

web ui: upgrade to newer than 0.8. Exact commands for each OS are on this page.

Q: Is CVE-2016-4847 being exploited?

CVE-2016-4847 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-2016-4847 affect?

CVE-2016-4847 affects web ui. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) vulnerability in site/search.php in OSSEC Web UI before 0.9 allows remote attackers to inject arbitrary web script or HTML by leveraging an unanchored regex.

Q: How urgent is CVE-2016-4847?

Priority 39/100. No elevated risk signals yet.

Routine

MEDIUM 6.1UPGRADE

CVE-2016-4847 is a medium-severity flaw (CVSS 6.1) affecting web ui. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Cross-site scripting (XSS) vulnerability in site/search.php in OSSEC Web UI before 0.9 allows remote attackers to inject arbitrary web script or HTML by leveraging an unanchored regex.

Why this priority

No elevated risk signals yet

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	1.3% (top 30%)
CISA exploited list	No
Weakness	CWE-79
Published	2017-04-20
Last modified	2026-06-17

Publisher (CNA): JPCERT/CC · Vendor: ossec

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

Am I affected?

Timeline

2017-04-20 17:59 UTCPublished CVE record published
2026-06-17 00:48 UTCUpdated Record last modified

ossec web ui UPGRADE

Affected: <= 0.8

Fixed in: newer than 0.8

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy web-ui || rpm -q web-ui || web-ui --version

2. UPGRADE to newer than 0.8 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade web-ui

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade web-ui

Note

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

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-2016-4847?

web ui: upgrade to newer than 0.8. Exact commands for each OS are on this page.

Is CVE-2016-4847 being exploited?

CVE-2016-4847 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-2016-4847 affect?

CVE-2016-4847 affects web ui. Severity is medium (CVSS 6.1). Cross-site scripting (XSS) vulnerability in site/search.php in OSSEC Web UI before 0.9 allows remote attackers to inject arbitrary web script or HTML by leveraging an unanchored regex.

How urgent is CVE-2016-4847?

Priority 39/100. No elevated risk signals yet.

Software pages

PHP vulnerabilities

Related CVEs

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CVE-2014-4980 MEDIUM 5.0 DOWNGRADE UPGRADE The /server/properties resource in Tenable Web UI before 2.3.5 for Nessus 5.2.3 through 5.2.7 allows remote at

References

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