CVE-2006-6421
Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated users to inject arbitrary web script or HTML via the "Message body" field in a message to a non-existent user.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 15.6%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
Description
Cross-site scripting (XSS) vulnerability in the private message box implementation (privmsg.php) in phpBB 2.0.x allows remote authenticated users to inject arbitrary web script or HTML via the "Message body" field in a message to a non-existent user.
- CVSS 2.0
- 6.0 MEDIUMAV:N/AC:M/Au:S/C:P/I:P/A:P
- EPSS
- 15.56% probability · 97th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 11 January 2007
- CISA KEV
- Not listed
- Affected
- phpbb group/phpbb
- Source
- cve@mitre.org
EPSS 15.6% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
Public exploits (1)
Entries in Exploit-DB that cite this CVE. Links go to the Exploit-DB page and to the file in the public repository; nothing is hosted here. A verified tick means the Exploit-DB team confirmed the exploit works against the stated version.
References
- http://secunia.com/advisories/23283
- http://securityreason.com/securityalert/2005
- http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=489624
- http://www.securityfocus.com/archive/1/453774/100/0/threaded
- http://www.securityfocus.com/archive/1/456579/100/0/threaded
- http://www.securityfocus.com/archive/1/456728/100/100/threaded
- http://www.securityfocus.com/archive/1/456784/100/100/threaded
- http://www.securityfocus.com/bid/21806
- http://www.securityfocus.com/bid/22001
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30776
- http://secunia.com/advisories/23283
- http://securityreason.com/securityalert/2005
- http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=489624
- http://www.securityfocus.com/archive/1/453774/100/0/threaded
- http://www.securityfocus.com/archive/1/456579/100/0/threaded
- http://www.securityfocus.com/archive/1/456728/100/100/threaded
- http://www.securityfocus.com/archive/1/456784/100/100/threaded
- http://www.securityfocus.com/bid/21806
- http://www.securityfocus.com/bid/22001
- https://exchange.xforce.ibmcloud.com/vulnerabilities/30776
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.