CVE-2018-20151
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a...
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
CVE-2018-20151- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
CVE-2018-20151- Updated
- 2026-11-02
EUVDEUVD-2018-12720 No score
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
EUVD-2018-12720- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-4mq7-pxfh-pjjv
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a...
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
GHSA-4mq7-pxfh-pjjv- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
CVE-2018-20151- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2018-20151
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
DEBIAN-CVE-2018-20151- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVUBUNTU-CVE-2018-20151
In WordPress before 4.9.9 and 5.x before 5.0.1, the user-activation page could be read by a search engine's web crawler if an unusual configuration were chosen. The search engine could then index and display a user's e-mail address and (rarely) the password that was generated by default.
- Record
UBUNTU-CVE-2018-20151- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
wordpressDebian:12 |
before 5.0.1+dfsg1-1 | 5.0.1+dfsg1-1 |
wordpressDebian:13 |
before 5.0.1+dfsg1-1 | 5.0.1+dfsg1-1 |
wordpressDebian:14 |
before 5.0.1+dfsg1-1 | 5.0.1+dfsg1-1 |
wordpressDebian:8 From an advisory covering 7 CVEs |
before 4.1.25+dfsg-1+deb8u1, plus listed versions 4.1+dfsg-14.1+dfsg-1+deb8u14.1+dfsg-1+deb8u104.1+dfsg-1+deb8u114.1+dfsg-1+deb8u12 Show 15 moreShow less4.1+dfsg-1+deb8u134.1+dfsg-1+deb8u144.1+dfsg-1+deb8u154.1+dfsg-1+deb8u164.1+dfsg-1+deb8u174.1+dfsg-1+deb8u184.1+dfsg-1+deb8u24.1+dfsg-1+deb8u34.1+dfsg-1+deb8u44.1+dfsg-1+deb8u54.1+dfsg-1+deb8u64.1+dfsg-1+deb8u74.1+dfsg-1+deb8u84.1+dfsg-1+deb8u94.1.1+dfsg-1 |
4.1.25+dfsg-1+deb8u1 |
wordpressDebian:9 From an advisory covering 8 CVEs |
before 4.7.5+dfsg-2+deb9u5, plus listed versions 4.7.5+dfsg-24.7.5+dfsg-2+deb9u14.7.5+dfsg-2+deb9u1~bpo8+14.7.5+dfsg-2+deb9u24.7.5+dfsg-2+deb9u2~bpo8+14.7.5+dfsg-2+deb9u34.7.5+dfsg-2+deb9u4 |
4.7.5+dfsg-2+deb9u5 |
wordpressUbuntu:16.04:LTS |
All versions, plus listed versions 4.3+dfsg-14.3.1+dfsg-14.4+dfsg-14.4.1+dfsg-14.4.2+dfsg-14.4.2+dfsg-1ubuntu1 |
None known |
wordpressUbuntu:18.04:LTS |
All versions, plus listed versions 4.8.2+dfsg-24.8.3+dfsg-14.9.1+dfsg-14.9.2+dfsg-14.9.4+dfsg-14.9.5+dfsg1-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-20151 is a high vulnerability (CVSS 7.5) in Wordpress, published December 14, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.78%, the 93rd percentile. Fixed in wordpress 5.0.1+dfsg1-1.
References
securityfocus.com/bid/106220
wordpress.org/support/wordpress-version/version-5-0-1
wpvulndb.com/vulnerabilities/9174
codex.wordpress.org/Version_4.9.9
debian.org/security/2019/dsa-4401
Show 7 moreShow less
lists.debian.org/debian-lts-announce/2019/02/msg00019.html
zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords
nvd.nist.gov/vuln/detail/CVE-2018-20151
github.com/advisories/GHSA-4mq7-pxfh-pjjv
security-tracker.debian.org/tracker/CVE-2018-20151
ubuntu.com/security/CVE-2018-20151
cve.org/CVERecord?id=CVE-2018-20151