Description
Before WordPress 4.9.5, the redirection URL for the login page was not validated or sanitized if forced to use HTTPS.
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 | 4.9.5+dfsg1-1 | — |
| Debian 13 | wordpress | 4.9.5+dfsg1-1 | — |
| Debian 12 | wordpress | 4.9.5+dfsg1-1 | — |
| Debian 9 | wordpress | 4.7.5+dfsg-2+deb9u3 | DSA-4193-1 |
| Debian 8 | wordpress | 4.1+dfsg-1+deb8u17 | DSA-4193-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 7 | wordpress | 3.6.1+dfsg-1~deb7u21 | DLA-1366-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | wordpress | No fix yet | — |
Advisories 2
- DSA-4193-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-1366-1 wordpress - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- 1040836 vdb-entry
- https://core.trac.wordpress.org/changeset/42892
- https://wpvulndb.com/vulnerabilities/9054
- DSA-4193 vendor-advisory
- https://wordpress.org/news/2018/04/wordpress-4-9-5-security-and-maintenance-release/
- [debian-lts-announce] 20180427 [SECURITY] [DLA 1366-1] wordpress security update mailing-list
- https://codex.wordpress.org/Version_4.9.5
- https://github.com/WordPress/WordPress/commit/14bc2c0a6fde0da04b47130707e01df850eedc7e