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CVE-2013-4701

20
FAUCET Score

CVE-2013-4701 is an XML External Entity (XXE) vulnerability in the Auth/Yadis/XML.php component of PHP OpenID Library versions 2.2.2 and earlier, affecting products like Janrain PHP OpenID. This flaw allows remote attackers to read arbitrary files, send HTTP requests to internal networks, or cause a denial of service through CPU and memory exhaustion. With a CVSS score of 7.5, it is considered highly severe due to its low attack complexity and potential for partial confidentiality, integrity, and availability impacts. There is currently 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
<= 2.2.2CPE matchmatch criteria
cpe:2.3:a:janrain:php-openid:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.00%
Probability of exploitation in next 30 days
EPSS Percentile
86.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0300 is in the 75th percentile among its peer group of 51,553 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, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: openid/php-openidFixed in: 2.3.0
composerpatch availablevia ghsa
Product: typo3/cmsFixed in: 6.2.6
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-5qp6-78pr-gv8chigh

PHP OpenID Library Denial of Service vulnerability

May 17, 2022

References

jvndb.jvn.jp / jvndb/JVNDB-2013-000080
jvn.jp / en/jp/JVN24713981/index.html
lists.opensuse.org / opensuse-security-announce/2016-08/msg00028.html
lists.opensuse.org / opensuse-updates/2016-08/msg00083.html
github.com / openid/php-openid/commit/625c16bb28bb120d262b3f19f89c2c06cb9b0da9
ExploitPatch