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CVE-2015-5511

15
FAUCET Score

CVE-2015-5511 describes a vulnerability in the HybridAuth Social Login module for Drupal, versions 7.x-2.x before 7.x-2.13, which allows remote attackers to bypass the "user registration by administrator only" setting. This bypass enables unauthorized account creation through social login. With a CVSS score of 5.0 (medium severity), the vulnerability is easily exploitable over the network with low complexity, leading to a partial integrity impact as unauthorized accounts can be created. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.x-2.0CPE matchmatch criteria
cpe:2.3:a:hybridauth_social_login_project:hybridauth_social_login:7.x-2.0:*:*:*:*:drupal:*:*
7.x-2.1CPE matchmatch criteria
cpe:2.3:a:hybridauth_social_login_project:hybridauth_social_login:7.x-2.1:*:*:*:*:drupal:*:*
7.x-2.2CPE matchmatch criteria
cpe:2.3:a:hybridauth_social_login_project:hybridauth_social_login:7.x-2.2:*:*:*:*:drupal:*:*
7.x-2.3CPE matchmatch criteria
cpe:2.3:a:hybridauth_social_login_project:hybridauth_social_login:7.x-2.3:*:*:*:*:drupal:*:*
7.x-2.4CPE matchmatch criteria
cpe:2.3:a:hybridauth_social_login_project:hybridauth_social_login:7.x-2.4:*:*:*:*:drupal:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.13%
Probability of exploitation in next 30 days
EPSS Percentile
80.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0213 is in the 69th percentile among its peer group of 23,725 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 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/2511200
Patch
drupal.org / node/2511410
PatchVendor Advisory
openwall.com / lists/oss-security/2015/07/04/4
securityfocus.com / bid/75412