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CVE-2019-16520

18
FAUCET Score

CVE-2019-16520 describes a Stored Cross-Site Scripting (XSS) vulnerability in the All in One SEO Pack plugin for WordPress, affecting versions prior to 3.2.7. This flaw arises from insufficient encoding of SEO-specific descriptions, allowing attackers to inject malicious scripts. Rated as MEDIUM severity (CVSS 5.4), it requires low privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 3.2.7CPE matchmatch criteria
cpe:2.3:a:semperplugins:all_in_one_seo_pack:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 96th percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / sbaresearch/advisories/tree/public/2019/SBA-ADV-20190913-04_WordPress_Plugin_All_in_One_SEO_Pack
ExploitThird Party Advisory
github.com / semperfiwebdesign/all-in-one-seo-pack/issues/2888
PatchThird Party Advisory
semperplugins.com / all-in-one-seo-pack-changelog
Release NotesVendor Advisory
wordpress.org / plugins/all-in-one-seo-pack
ProductThird Party Advisory
wpvulndb.com / vulnerabilities/9915
Third Party Advisory
openwall.com / lists/oss-security/2019/10/16/5
ExploitMailing ListThird Party Advisory