CVE-2018-20838 json
ampforwp_save_steps_data in the AMP for WP plugin before 0.9.97.21 for WordPress allows stored XSS.
published 2019-05-13 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-13378
- cvss
- 5.4
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 64%
- public exploits
- 0
- none known
Summary
ampforwp_save_steps_data in the AMP for WP plugin before 0.9.97.21 for WordPress allows stored XSS.
Patch / fix
- magazine3 amp_for_wp 0.9.97.21
Exploit prediction
1.06% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wordfence.com https://www.wordfence.com/blog/2018/11/xss-injection-campaign-exploits-wordpress-amp-plugin/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 5.4 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
-
wordfence.com
/blog/2018/11/xss-injection-campaign-exploits-wordpress-amp-plugin/
exploit, third-party-advisory
-
plugins.trac.wordpress.org
/browser/accelerated-mobile-pages/trunk/changelog.txt
release-notes, third-party-advisory
-
wordpress.org
/plugins/accelerated-mobile-pages/#developers
release-notes, third-party-advisory
- ampforwp.com /critical-security-issues-has-been-fixed-in-0-9-97-20-version/
Sources
- CVE List CVE-2018-20838
- NVD CVE-2018-20838
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.