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7.5
CVE-2002-0733: thttpd may run malicious script in missing-page errors
CVE-2002-0733 · published 24 years ago
Summary
The thttpd web server (version 2.20 and earlier) can insert attacker‑provided code into the page shown when a requested URL does not exist. This allows a remote user to execute their own script in a visitor's browser, potentially stealing data or hijacking sessions. Update thttpd to a newer version or apply input‑validation patches to stop the unwanted code from being inserted.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| acme_labs | thttpd |
2.20b cpe:2.3:a:acme_labs:thttpd:2.20b:*:*:*:*:*:*:* |
Original advisory text
Cross-site scripting vulnerability in thttpd 2.20 and earlier allows remote attackers to execute arbitrary script via a URL to a nonexistent page, which causes thttpd to insert the script into a 40...
Cross-site scripting vulnerability in thttpd 2.20 and earlier allows remote attackers to execute arbitrary script via a URL to a nonexistent page, which causes thttpd to insert the script into a 404 error message.
References
- http://archives.neohapsis.com/archives/vuln-dev/2002-q2/0155.html Vendor Advisory
- http://www.acme.com/software/thttpd/#releasenotes
- http://www.ifrance.com/kitetoua/tuto/5holes1.txt
- http://www.iss.net/security_center/static/9029.php Vendor Advisory
- http://www.osvdb.org/5125
- http://www.securityfocus.com/bid/4601 Exploit Vendor Advisory
Internet-facing
14 days
Internal
60 days
- Not known to be exploited
- Can be exploited automatically (estimated)
- Gives an attacker partial control (estimated)
Severity
7.5
High
Timeline
Published12 Aug 2002
Updated15 Oct 2026
First seen29 Sep 2026
Sources
CVE-2002-0733 · NVD
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