Description
The default configuration of SWFUpload in WordPress before 3.5.2 has an unrestrictive security.allowDomain setting, which allows remote attackers to bypass the Same Origin Policy and conduct cross-site scripting (XSS) attacks via a crafted web site.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wordpress | 3.5.2+dfsg-1 | — |
| Debian 13 | wordpress | 3.5.2+dfsg-1 | — |
| Debian 12 | wordpress | 3.5.2+dfsg-1 | — |
| Debian 7 | wordpress | 3.5.2+dfsg-1~deb7u1 | DSA-2718-1 |
| Debian 6.0 | wordpress | 3.5.2+dfsg-1~deb6u1 | DSA-2718-1 |
Advisories 1
- DSA-2718-1 wordpress - several Debian Security (DSA / DLA) · Mar 9, 2026