CVE-2013-4701

Exp

Auth/Yadis/XML.php in PHP OpenID Library 2.2.2 and earlier allows remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service (CPU and memory consumption) via XRDS data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue.

Published: 2013-08-21 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4701 is rated High Exploit Risk (77.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 3.00%). 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.12% 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-2013-4701

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-4701

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 0.88% 3.00% +2.12%
2 2025-03-30 1.55% 0.88% -0.67%
3 2025-03-29 — 1.55% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4701

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2013-4701

GitHub Security Advisory for CVE-2013-4701

GHSA-5qp6-78pr-gv8c · Severity: high · Ecosystem: composer — PHP OpenID Library Denial of Service vulnerability

OS Trackers for CVE-2013-4701

vendor priority summary link
ubuntu medium CVE-2013-4701 medium priority: Ubuntu including 1 source packages (php-openid), 13 status rows across 13 suites (lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 8, DNE 2, not-affected 2, released 1. https://ubuntu.com/security/CVE-2013-4701

Affected software / configurations for CVE-2013-4701

Vendor Product Version Raw CPE
janrain php-openid <= 2.2.2 cpe:2.3:a:janrain:php-openid:*:*:*:*:*:*:*:*

References for CVE-2013-4701

cvelogic Threat Intelligence