Description
In WordPress before 4.7.5, a cross-site scripting (XSS) vulnerability exists when attempting to upload very large files, because the error message does not properly restrict presentation of the filename.
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 | 4.7.5+dfsg-1 | — |
| Debian 13 | wordpress | 4.7.5+dfsg-1 | — |
| Debian 12 | wordpress | 4.7.5+dfsg-1 | — |
| Debian 8 | wordpress | 4.1+dfsg-1+deb8u14 | DSA-3870-1 |
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u15 | DLA-975-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress | No fix yet | — |
Advisories 2
- DLA-975-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3870-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026