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Fencer Vulns
medium 5.3

CVE-2017-5487 json

wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php in the REST API implementation in WordPress 4.7 before 4.7.1 does not pro…

published 2017-01-15 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-14591

cvss
5.3
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
87.3%
EPSS 87.3% chance of exploitation in 30 days, percentile 99.7%
public exploits
1
Exploit-DB

Summary

wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php in the REST API implementation in WordPress 4.7 before 4.7.1 does not properly restrict listings of post authors, which allows remote attackers to obtain sensitive information via a wp-json/wp/v2/users request.

Patch / fix

  • wordpress Debian 14, Debian 13, Debian 12 4.7.1+dfsg-1

debian advisories DEBIAN-CVE-2017-5487

  • wordpress Arch Linux 4.7.1-1

arch linux advisories AVG-142

Timeline

  1. Published
  2. First public exploit (EDB-41497)

Exploit prediction

87.30% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-41497 WordPress Core < 4.7.1 - Username Enumeration webapps, 2017-03-03

CVSS scores

assigned by version score vector
NVD 3.0 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.