Description
WordPress allows remote attackers to cause a denial of service (bandwidth or thread consumption) via pingback service calls with a source URI that corresponds to a file with a binary content type, which is downloaded even though it cannot contain usable pingback data.
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 | 2.1.0-1 | — |
| Debian 13 | wordpress | 2.1.0-1 | — |
| Debian 12 | wordpress | 2.1.0-1 | — |
| Debian 4.0 | wordpress | 2.0.10-1etch2 | DSA-1564-1 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- WordPress Core 1.x/2.0.x - Pingback SourceURI Denial of Service / Information Disclosure EDB-29522 · webapps · Jan 24, 2007 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 1
- DSA-1564-1 wordpress - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 30013 third-party-advisory
- 20070124 Multiple Remote Vulnerabilities in Wordpress mailing-list
- DSA-1564 vendor-advisory
- 20070124 Weaknesses in Pingback Design mailing-list
- 2191 third-party-advisory