Description
The Incutio XML-RPC (IXR) Library, as used in WordPress before 3.9.2 and Drupal 6.x before 6.33 and 7.x before 7.31, permits entity declarations without considering recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.
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 | drupal7 | 7.14-2+deb7u6 | DSA-2999-1 |
| 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 | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | drupal7 | No fix yet | — |
Advisories 3
- 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
- DSA-2999-1 drupal7 - security update Debian Security (DSA / DLA) · Mar 9, 2026