CVE-1999-1053
guestbook.pl cleanses user-inserted SSI commands by removing text between "<!--" and "-->" separators, which allows remote attackers to…
- 7.5HighCVSS base score
- 85.2%Exploitation in 30 daysEPSS · top 0.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 3Public exploitsMetasploit, Nuclei and Exploit-DB
Description
guestbook.pl cleanses user-inserted SSI commands by removing text between "<!--" and "-->" separators, which allows remote attackers to execute arbitrary commands when guestbook.pl is run on Apache 1.3.9 and possibly other versions, since Apache allows other closing sequences besides "-->".
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list a Metasploit module and 2 Exploit-DB entries for it.
Show the exploits3
Metasploit modules1 module
- Matt Wright guestbook.pl Arbitrary Command Execution (Metasploit module) (opens in a new tab)
exploit/unix/webapp/guestbook_ssi_execRank excellentdisclosed 5 Nov 1999
Exploit-DB2 entries
- The Matt Wright Guestbook.pl - Arbitrary Command Execution (Metasploit) (Exploit-DB entry) (opens in a new tab)
EDB-ID 16914webapps, cgipublished 3 Jul 2010Verified
- The Matt Wright Guestbook.pl 2.3.1 - Server-Side Include (Exploit-DB entry) (opens in a new tab)
EDB-ID 9907webapps, cgipublished 5 Nov 1999Verified
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 12 days later
· 12 days later
Published
- 23 years later
· 23 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
- EPSS (exploitation in 30 days)
- 85.2% · top 0.3% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
References4
- 19990913 Guestbook perl script (long) (opens in a new tab)mailing-listx_refsource_VULN-DEVx_transferred
- 776 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 19991105 Guestbook.pl, sloppy SSI handling in Apache? (VD#2) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- 19990916 Re: Guestbook perl script (error fix) (opens in a new tab)mailing-listx_refsource_VULN-DEVx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-1999-1034 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-1999-1053)Record last updated .