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CVE-2015-5505

21
FAUCET Score

CVE-2015-5505 describes a vulnerability in the HTTP Strict Transport Security (HSTS) module for Drupal, specifically versions 6.x-1.x prior to 6.x-1.1 and 7.x-1.x prior to 7.x-1.2. The module fails to correctly enforce the "include subdomains" directive, preventing the HSTS policy from applying to subdomains. This flaw carries a CVSS score of 6.8, indicating a medium severity, as it could allow man-in-the-middle attackers to compromise subdomains with unspecified impact through unknown attack vectors. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
6.x-1.0CPE matchmatch criteria
cpe:2.3:a:codfront_labs:http_strict_transport_security:6.x-1.0:*:*:*:*:drupal:*:*
6.x-1.0CPE matchmatch criteria
cpe:2.3:a:codfront_labs:http_strict_transport_security:6.x-1.0:rc1:*:*:*:drupal:*:*
6.x-1.xCPE matchmatch criteria
cpe:2.3:a:codfront_labs:http_strict_transport_security:6.x-1.x:dev:*:*:*:drupal:*:*
7.x-1.0CPE matchmatch criteria
cpe:2.3:a:codfront_labs:http_strict_transport_security:7.x-1.0:*:*:*:*:drupal:*:*
7.x-1.0CPE matchmatch criteria
cpe:2.3:a:codfront_labs:http_strict_transport_security:7.x-1.0:rc1:*:*:*:drupal:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.62%
Probability of exploitation in next 30 days
EPSS Percentile
73.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0162 is in the 49th percentile among its peer group of 19,955 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

drupal.org / node/2507539
Patch
drupal.org / node/2507543
Patch
drupal.org / node/2507563
PatchVendor Advisory
openwall.com / lists/oss-security/2015/07/04/4
securityfocus.com / bid/75276
securitytracker.com / id/1037633