CVE-2013-1916

Exp

In WordPress Plugin User Photo 0.9.4, when a photo is uploaded, it is only partially validated and it is possible to upload a backdoor on the server hosting WordPress. This backdoor can be called (executed) even if the photo has not been yet approved.

Published: 2022-06-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1916 is rated High Exploit Risk (89.2/100): CVSS High severity, with high exploitation likelihood (EPSS 34.77%, 97th percentile). 2 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +9.50% 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-2013-1916

EDB-ID Source Kind Published Link
16181 exploit_db edb 2011-02-17 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-1916

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 2026-04-14 25.27% 34.77% +9.50%
2 2026-03-04 20.29% 25.27% +4.97%
3 2026-03-01 — 20.29% —

Full EPSS history (58 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1916

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H 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:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
8.5 2.0 HIGH
AV:N/AC:M/Au:S/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 6.8 10.0 [email protected]

Weakness enumeration for CVE-2013-1916

Affected software / configurations for CVE-2013-1916

Vendor Product Version Raw CPE
user_photo_project user_photo 0.9.4 cpe:2.3:a:user_photo_project:user_photo:0.9.4:*:*:*:*:wordpress:*:*

References for CVE-2013-1916

URL Tags
https://plugins.trac.wordpress.org/changeset/347137 Patch Third Party Advisory
https://wordpress.org/plugins/user-photo/#developers Release Notes Third Party Advisory
https://www.exploit-db.com/exploits/16181 Exploit Third Party Advisory VDB Entry
cvelogic Threat Intelligence