CVE-2019-13478: wordpress wordpress-seo Cross-site Scripting
Modified
Published 09-07-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-13478 is a critical (CVSS 9.9) Cross-site Scripting vulnerability in wordpress wordpress-seo. EPSS estimates a 3.30% chance of exploitation in the next 30 days, higher than 88.4% of scored vulnerabilities. Fixed in 11.6-RC5.
CVSS score
9.9/10
010
Critical · v3.0 (CVE.org)EPSS score
3.30%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded
Timeline
- 09-07-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions.
CVSS metrics
5 scores · 3 sources · 3 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSources2 sources · 6.4–9.8
- wordfenceSource6.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NDiffers
Critical 9.9Preferred score · CVE.org (CNA)
CVSS:3.0/AC:L/AV:N/A:L/C:H/I:H/PR:L/S:C/UI:NSourcesAll 2 agree
- NVDNIST9.9CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
3.30%
Chance of exploitation in the next 30 days
Percentile
88%
Versus all other CVEs
30-day change
No change 0.00 pp
From 3.30% on 22-09-2026
22-09-202622-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Wordpress1 product
- wordpress-seo≤ 11.5 (fixed in 11.6-RC5)
Yoast1 product
- yoast_seo< 11.6 | 11.6:rc1 | 11.6:rc2 | 11.6:rc3 | 11.6:rc4
2 vendors · 2 products