6.4

CVE-2019-16520: semperplugins all_in_one_seo_pack Cross-site Scripting

Modified
Published 16-10-2019Last modified 05-08-2024

Vulnerability summary

CVE-2019-16520 is a medium (CVSS 6.4) Cross-site Scripting vulnerability in semperplugins all_in_one_seo_pack. EPSS estimates a 1.53% chance of exploitation in the next 30 days, higher than 74.5% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.4/10
010
Medium · v3.1 (wordfence)
EPSS score
1.53%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits2github, reference

Timeline

  1. 16-10-2019
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.53%

Chance of exploitation in the next 30 days

Percentile

75%

Versus all other CVEs

30-day change

No change 0.00 pp

From 1.53% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found
  • githubUnverified

    Advisories

    Maturity: poc

  • referenceUnverified

    Exploit Reference (openwall.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Semperplugins1 product
Wordpress1 product
  • all-in-one-seo-pack≤ 3.2.6 (fixed in 3.2.7)

2 vendors · 2 products

References

7 links