PatchTheCVECVE-2015-9439: The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.ph
CVE-2015-9439 is a medium-severity flaw (CVSS 4.8) affecting addthis. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.php?page=addthis_social_widget pubid parameter.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.8 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | Required |
| EPSS exploit chance | 1.0% (top 38%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2019-09-26 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2015-9439?
addthis: upgrade to 5.0.13. Exact commands for each OS are on this page.
Is CVE-2015-9439 being exploited?
CVE-2015-9439 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2015-9439 affect?
CVE-2015-9439 affects addthis. Severity is medium (CVSS 4.8). The addthis plugin before 5.0.13 for WordPress has CSRF with resultant XSS via the wp-admin/options-general.php?page=addthis_social_widget pubid parameter.
How urgent is CVE-2015-9439?
Priority 32/100. No elevated risk signals yet.
Software pages
WordPress vulnerabilities · PHP vulnerabilities