XSS in Semperplugins All In One Seo Pack
CVE-2019-16520
The all-in-one-seo-pack plugin before 3.2.7 for WordPress (aka All in One SEO Pack) is susceptible to Stored XSS due to improper encoding of the SEO-specific description for posts provided by the plugin via unsafe placeholder replacement.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 74th percentile — 73.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/all-in-one-seo-pack/ (Product, Third Party Advisory)
- semperplugins.com/all-in-one-seo-pack-changelog/ (Release Notes, Vendor Advisory)
- github.com/semperfiwebdesign/all-in-one-seo-pack/issues/2888 (Patch, Third Party Advisory)
- github.com/sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-04_WordPres… (Exploit, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/10/16/5 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- wpvulndb.com/vulnerabilities/9915 (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-16520?
- CVE-2019-16520 is a medium-severity vulnerability in Semperplugins All In One Seo Pack, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-10-16.
- How severe is CVE-2019-16520?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2019-16520 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.