MEDIUM
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
Published Jan 15, 2017
5.3
MEDIUMCVSS 3.0
EPSS 87.30%
Description
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.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.3 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
87.30% 0.87299
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.87299
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (38 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 87.30% (0.87299) | 99.75th | v5 (v2026.06.15) |
| Sep 22, 2026 | 87.30% (0.87299) | 99.74th | v5 (v2026.06.15) |
| Sep 21, 2026 | 77.04% (0.77037) | 99.54th | v5 (v2026.06.15) |
| Sep 6, 2026 | 87.30% (0.87299) | 99.74th | v5 (v2026.06.15) |
| Sep 5, 2026 | 77.04% (0.77037) | 99.53th | v5 (v2026.06.15) |
| Aug 30, 2026 | 87.30% (0.87299) | 99.74th | v5 (v2026.06.15) |
| Aug 28, 2026 | 77.04% (0.77037) | 99.53th | v5 (v2026.06.15) |
| Aug 24, 2026 | 87.30% (0.87299) | 99.74th | v5 (v2026.06.15) |
| Aug 23, 2026 | 77.04% (0.77037) | 99.53th | v5 (v2026.06.15) |
| Jun 15, 2026 | 87.30% (0.87299) | 99.73th | v5 (v2026.06.15) |
| Nov 21, 2025 | 92.41% (0.92412) | 99.71th | v4 (v2025.03.14) |
| Nov 18, 2025 | 85.13% (0.85130) | 99.44th | v4 (v2025.03.14) |
| Nov 4, 2025 | 92.41% (0.92412) | 99.71th | v4 (v2025.03.14) |
| Nov 1, 2025 | 91.29% (0.91293) | 99.64th | v4 (v2025.03.14) |
| Oct 4, 2025 | 92.41% (0.92412) | 99.72th | v4 (v2025.03.14) |
| Oct 2, 2025 | 91.29% (0.91293) | 99.65th | v4 (v2025.03.14) |
| Sep 4, 2025 | 92.44% (0.92436) | 99.72th | v4 (v2025.03.14) |
| Sep 1, 2025 | 91.33% (0.91330) | 99.66th | v4 (v2025.03.14) |
| Aug 4, 2025 | 92.44% (0.92436) | 99.72th | v4 (v2025.03.14) |
| Aug 1, 2025 | 91.33% (0.91330) | 99.65th | v4 (v2025.03.14) |
| Jul 4, 2025 | 92.41% (0.92412) | 99.72th | v4 (v2025.03.14) |
| Jul 1, 2025 | 91.29% (0.91293) | 99.64th | v4 (v2025.03.14) |
| Jun 4, 2025 | 92.41% (0.92412) | 99.71th | v4 (v2025.03.14) |
| Jun 1, 2025 | 91.29% (0.91293) | 99.64th | v4 (v2025.03.14) |
| Mar 17, 2025 | 92.88% (0.92875) | 99.77th | v4 (v2025.03.14) |
| Dec 17, 2024 | 13.14% (0.13142) | 95.52th | v3 (v2023.03.01) |
| Dec 12, 2024 | 87.36% (0.87357) | 98.77th | v3 (v2023.03.01) |
| Feb 6, 2024 | 87.41% (0.87410) | 98.40th | v3 (v2023.03.01) |
| Aug 18, 2023 | 97.18% (0.97179) | 99.71th | v3 (v2023.03.01) |
| Jul 8, 2023 | 97.20% (0.97204) | 99.72th | v3 (v2023.03.01) |
| May 8, 2023 | 97.34% (0.97335) | 99.80th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.32% (0.97324) | 99.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 43.88% (0.43883) | 98.34th | v2 (v2022.01.01) |
| Feb 4, 2022 | 43.88% (0.43883) | 97.69th | v2 (v2022.01.01) |
| Feb 3, 2022 | 10.66% (0.10659) | 87.80th | v1 |
| Jan 6, 2022 | 10.66% (0.10659) | 87.66th | v1 |
| Sep 1, 2021 | 10.66% (0.10659) | 95.13th | v1 |
| Apr 14, 2021 | 10.66% (0.10659) | 0.00th | v1 |
Weaknesses (1)
References (9)
- http://www.openwall.com/lists/oss-security/2017/01/14/6 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/95391 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1037591 vdb-entryx_refsource_SECTRACK
- https://codex.wordpress.org/Version_4.7.1 x_refsource_CONFIRMRelease NotesVendor Advisory
- https://github.com/WordPress/WordPress/commit/daf358983cc1ce0c77bf6d2de2ebbb43df2add60 x_refsource_CONFIRMPatch
- https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ x_refsource_CONFIRMVendor Advisory
- https://wpvulndb.com/vulnerabilities/8715 x_refsource_MISC
- https://www.exploit-db.com/exploits/41497/ exploitx_refsource_EXPLOIT-DB
- https://www.wordfence.com/blog/2016/12/wordfence-blocks-username-harvesting-via-new-rest-api-wp-4-7/ x_refsource_MISCThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2017/01/14/6 | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| http://www.securityfocus.com/bid/95391 | vdb-entryx_refsource_BID | |
| http://www.securitytracker.com/id/1037591 | vdb-entryx_refsource_SECTRACK | |
| https://codex.wordpress.org/Version_4.7.1 | x_refsource_CONFIRMRelease NotesVendor Advisory | |
| https://github.com/WordPress/WordPress/commit/daf358983cc1ce0c77bf6d2de2ebbb43df2add60 | x_refsource_CONFIRMPatch | |
| https://wordpress.org/news/2017/01/wordpress-4-7-1-security-and-maintenance-release/ | x_refsource_CONFIRMVendor Advisory | |
| https://wpvulndb.com/vulnerabilities/8715 | x_refsource_MISC | |
| https://www.exploit-db.com/exploits/41497/ | exploitx_refsource_EXPLOIT-DB | |
| https://www.wordfence.com/blog/2016/12/wordfence-blocks-username-harvesting-via-new-rest-api-wp-4-7/ | x_refsource_MISCThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jan 15, 2017
Updated Aug 5, 2024
Reserved Jan 14, 2017
Link CVE-2017-5487
CISA Vulnrichment
Updated n/a