Description
wp-includes/pluggable.php in WordPress before 3.9.2 does not use delimiters during concatenation of action values and uid values in CSRF tokens, which makes it easier for remote attackers to bypass a CSRF protection mechanism via a brute-force attack.
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 | 3.9.2+dfsg-1 | — |
| Debian 13 | wordpress | 3.9.2+dfsg-1 | — |
| Debian 12 | wordpress | 3.9.2+dfsg-1 | — |
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u4 | DSA-3001-1 |
| Debian 6.0 | wordpress | 3.6.1+dfsg-1~deb6u5 | DLA-56-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | wordpress | 3.8.2+dfsg-1ubuntu0.1 | — |
Advisories 2
- DLA-56-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3001-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026