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CVE-2019-6339

PHAR stream wrapper Arbitrary PHP code execution

9.8 CriticalPublic exploitFix available

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

35.9%Up 34.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
CVE-2019-6339
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

PHAR stream wrapper Arbitrary PHP code execution

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
CVE-2019-6339
Updated
2026-11-02
EUVDEUVD-2022-0526 No score

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
EUVD-2022-0526
Updated
2026-11-03
GitHub AdvisoriesGHSA-8cw5-rv98-5c46 9.8

Arbitrary PHP code execution in Drupal

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6, and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
GHSA-8cw5-rv98-5c46
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSV 9.8

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
CVE-2019-6339
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-8cw5-rv98-5c46 9.8

Arbitrary PHP code execution in Drupal

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6, and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
GHSA-8cw5-rv98-5c46
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-20
Updated
2026-11-02
OSVUBUNTU-CVE-2019-6339 9.8

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI. Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability. This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
UBUNTU-CVE-2019-6339
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDRUPAL-CORE-2019-002 No score

A remote code execution vulnerability exists in PHP's built-in phar stream wrapper when performing file operations on an untrusted phar:// URI.

Some Drupal code (core, contrib, and custom) may be performing file operations on insufficiently validated user input, thereby being exposed to this vulnerability.

This vulnerability is mitigated by the fact that such code paths typically require access to an administrative permission or an atypical configuration.

Record
DRUPAL-CORE-2019-002
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
drupal/drupal
Packagist
7.0.0 up to 7.62.0
7.62.0
drupal/drupal
Packagist
8.0.0 up to 8.5.9
8.5.9
drupal/drupal
Packagist
8.6.0 up to 8.6.6
8.6.6
drupal/core
Packagist
7.0.0 up to 7.62.0
7.62.0
drupal/core
Packagist
8.0.0 up to 8.5.9
8.5.9
drupal/core
Packagist
8.6.0 up to 8.6.6
8.6.6
drupal7
Debian:8
before 7.32-1+deb8u14, plus listed versions
7.32-1+deb8u107.32-1+deb8u117.32-1+deb8u127.32-1+deb8u137.32-1+deb8u3
Show 8 moreShow less
7.32-1+deb8u47.32-1+deb8u4~bpo70+17.32-1+deb8u57.32-1+deb8u5~bpo70+17.32-1+deb8u67.32-1+deb8u77.32-1+deb8u87.32-1+deb8u9
7.32-1+deb8u14
drupal/core
Packagist
8.0.0 up to 8.5.9, 8.6.0 up to 8.6.6, plus listed versions
8.0.18.0.28.0.38.0.48.0.5
Show 45 moreShow less
8.0.68.1.08.1.0-beta18.1.0-beta28.1.0-rc18.1.18.1.108.1.28.1.38.1.48.1.58.1.68.1.78.1.88.1.98.2.08.2.0-beta18.2.0-beta28.2.0-beta38.2.0-rc18.2.0-rc28.2.18.2.28.2.38.2.48.2.58.2.68.2.78.2.88.3.08.3.0-alpha18.3.0-beta18.3.0-rc18.3.0-rc28.3.18.3.28.3.38.3.48.3.58.3.68.3.78.3.88.3.98.4.08.4.0-alpha1
8.5.98.6.6
drupal7
Debian:9
From an advisory covering 2 CVEs
before 7.52-2+deb9u6, plus listed versions
7.52-27.52-2+deb9u17.52-2+deb9u27.52-2+deb9u37.52-2+deb9u47.52-2+deb9u5
7.52-2+deb9u6
drupal/drupal
Packagist
8.0.0 up to 8.5.9, plus listed versions
8.0.18.0.28.0.38.0.48.0.5
Show 45 moreShow less
8.0.68.1.08.1.0-beta18.1.0-beta28.1.0-rc18.1.18.1.108.1.28.1.38.1.48.1.58.1.68.1.78.1.88.1.98.2.08.2.0-beta18.2.0-beta28.2.0-beta38.2.0-rc18.2.0-rc28.2.18.2.28.2.38.2.48.2.58.2.68.2.78.2.88.3.08.3.0-alpha18.3.0-beta18.3.0-rc18.3.0-rc28.3.18.3.28.3.38.3.48.3.58.3.68.3.78.3.88.3.98.4.08.4.0-alpha1
8.5.9
Show 5 moreShow less
Affected packages
PackageAffectedFixed
drupal/drupal
Packagist
8.6.0 up to 8.6.6, plus listed versions
8.6.18.6.28.6.38.6.48.6.5
8.6.6
drupal/core
Packagist
8.0.0 up to 8.5.9, plus listed versions
8.0.18.0.28.0.38.0.48.0.5
Show 45 moreShow less
8.0.68.1.08.1.0-beta18.1.0-beta28.1.0-rc18.1.18.1.108.1.28.1.38.1.48.1.58.1.68.1.78.1.88.1.98.2.08.2.0-beta18.2.0-beta28.2.0-beta38.2.0-rc18.2.0-rc28.2.18.2.28.2.38.2.48.2.58.2.68.2.78.2.88.3.08.3.0-alpha18.3.0-beta18.3.0-rc18.3.0-rc28.3.18.3.28.3.38.3.48.3.58.3.68.3.78.3.88.3.98.4.08.4.0-alpha1
8.5.9
drupal/core
Packagist
8.6.0 up to 8.6.6, plus listed versions
8.6.18.6.28.6.38.6.48.6.5
8.6.6
drupal7
Ubuntu:Pro:14.04:LTS
All versions, plus listed versions
7.23-17.24-17.24-27.26-17.26-1ubuntu0.17.26-1ubuntu0.1+esm17.26-1ubuntu0.1+esm27.26-1ubuntu0.1+esm3
None known
drupal7
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
7.38-17.41-17.44-1ubuntu1~16.04.07.44-1ubuntu1~16.04.0+esm17.44-1ubuntu1~16.04.0+esm27.44-1ubuntu1~16.04.0+esm3
None known

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubVulnmachines/drupal-cve-2019-63392021-10-19

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-6339 is a critical vulnerability (CVSS 9.8) in Drupal, published January 16, 2019. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 35.9%, the 98th percentile. Fixed in drupal/drupal 7.62.0.

References

This page doesn't list everything

Left out here: 74 versions. The JSON record has them.

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