HOMEVULNERABILITIESCVE-2018-10547
MEDIUM

CVE-2018-10547

CWE-79Published: April 29, 2018· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official Description

An issue was discovered in ext/phar/phar_object.c in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. There is Reflected XSS on the PHAR 403 and 404 error pages via request data of a request for a .phar file. NOTE: this vulnerability exists because of an incomplete fix for CVE-2018-5712.

NVD Source

Technical Analysis

CVE-2018-10547 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
netapp1 product(s)
storage automation store
PHP1 product(s)
php
Source: NVD CPE · 10 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
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Official Patches & Advisories

All References (24)

http://php.net/ChangeLog-5.phpPatch · Vendor Advisory
http://php.net/ChangeLog-7.phpPatch · Vendor Advisory
http://www.securitytracker.com/id/1040807Third Party Advisory · VDB Entry
https://bugs.php.net/bug.php?id=76129Issue Tracking · Patch · Vendor Advisory
https://usn.ubuntu.com/3646-1/Third Party Advisory
https://usn.ubuntu.com/3646-2/Third Party Advisory
http://php.net/ChangeLog-5.phpPatch · Vendor Advisory
http://php.net/ChangeLog-7.phpPatch · Vendor Advisory
http://www.securitytracker.com/id/1040807Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2018-10547
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-79
CISA KEVNo
Affected4 vendor(s)
PublishedApr 29, 2018

Related CVEs (CWE-79)

Recommended Actions

  • Apply vendor patches immediately
  • Monitor CVE-2018-10547 in threat intel feeds
  • Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.