HOMEVULNERABILITIESCVE-2016-6639
HIGH

CVE-2016-6639

CWE-254Published: September 18, 2016· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Cloud Foundry PHP Buildpack (aka php-buildpack) before 4.3.18 and PHP Buildpack Cf-release before 242, as used in Pivotal Cloud Foundry (PCF) Elastic Runtime before 1.6.38 and 1.7.x before 1.7.19 and other products, place the .profile file in the htdocs directory, which might allow remote attackers to obtain sensitive information via an HTTP GET request for this file.

NVD Source

Technical Analysis

CVE-2016-6639 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

cloudfoundry1 product(s)
php-buildpack
pivotal1 product(s)
cloud foundry elastic runtime
Source: NVD CPE · 21 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/cloudfoundry/php-buildpack/commit/e2db3ccd4812e0c0aba20720fc51789d981aba67
PATCHhttps://github.com/cloudfoundry/php-buildpack/commit/e2db3ccd4812e0c0aba20720fc51789d981aba67
ADVISORYhttps://pivotal.io/security/cve-2016-6639
ADVISORYhttps://pivotal.io/security/cve-2016-6639

All References (4)

→
https://github.com/cloudfoundry/php-buildpack/commit/e2db3ccd4812e0c0aba20720fc51789d981aba67Patch · Third Party Advisory
→
https://pivotal.io/security/cve-2016-6639Vendor Advisory
→
https://github.com/cloudfoundry/php-buildpack/commit/e2db3ccd4812e0c0aba20720fc51789d981aba67Patch · Third Party Advisory
→
https://pivotal.io/security/cve-2016-6639Vendor Advisory

Quick Facts

CVE IDCVE-2016-6639
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-254
CISA KEVNo
Affected2 vendor(s)
PublishedSep 18, 2016

Related CVEs (CWE-254)

CVE-2016-5788
10.0
CVE-2015-3972
10.0
CVE-2015-1158
10.0
CVE-2015-7554
9.8
CVE-2016-1896
9.8
CVE-2015-8803
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-6639 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.COM. CVE data is provided under the NVD usage policy.
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