Description
WordPress before 4.5 does not consider octal and hexadecimal IP address formats when determining an intranet address, which allows remote attackers to bypass an intended SSRF protection mechanism via a crafted address.
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 | 4.5+dfsg-1 | — |
| Debian 13 | wordpress | 4.5+dfsg-1 | — |
| Debian 12 | wordpress | 4.5+dfsg-1 | — |
| Debian 8 | wordpress | 4.1+dfsg-1+deb8u10 | DSA-3681-1 |
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u12 | DLA-633-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress | No fix yet | — |
Advisories 2
- DLA-633-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3681-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026