CVE-2015-4039

Exp

Multiple cross-site scripting (XSS) vulnerabilities in the WP Membership plugin 1.2.3 for WordPress allow remote authenticated users to inject arbitrary web script or HTML via unspecified (1) profile fields or (2) new post content. NOTE: CVE-2015-4038 can be used to bypass the administrator confirmation step for vector 2.

Published: 2020-01-06 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-4039 is rated High Exploit Risk (68.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 2.79%). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.49% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2015-4039

EDB-ID Source Kind Published Link
37074 exploit_db edb 2015-05-21 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2015-4039

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.30% 2.79% +2.49%
2 2025-03-30 2.00% 0.30% -1.70%
3 2025-03-29 — 2.00% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4039

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.3 2.7 [email protected]
3.5 2.0 LOW
AV:N/AC:M/Au:S/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 6.8 2.9 [email protected]

Weakness enumeration for CVE-2015-4039

Affected software / configurations for CVE-2015-4039

Vendor Product Version Raw CPE
e-plugins wp_membership 1.2.3 cpe:2.3:a:e-plugins:wp_membership:1.2.3:*:*:*:*:wordpress:*:*

References for CVE-2015-4039

URL Tags
http://packetstormsecurity.com/files/132011/WordPress-WP-Membership-1.2.3-Cross-Site-Scripting.html Exploit Third Party Advisory VDB Entry
http://www.securityfocus.com/archive/1/archive/1/535586/100/0/threaded Broken Link Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/74766 Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/37074/ Exploit Third Party Advisory VDB Entry
cvelogic Threat Intelligence