CVE-2011-5026
Cross-site scripting (XSS) vulnerability in the addPost function in data/functions.php in Winn GuestBook before 2.4.8d allows remote attackers to inject arbitrary web script or HTML via the name parameter to index.php.
Does this matter?
A public exploit is published in Exploit-DB (verified), so the technical barrier is gone even though the severity is medium and EPSS is 1.6%. Treat it as high on anything reachable from the internet.
Description
Cross-site scripting (XSS) vulnerability in the addPost function in data/functions.php in Winn GuestBook before 2.4.8d allows remote attackers to inject arbitrary web script or HTML via the name parameter to index.php. NOTE: some of these details are obtained from third party information.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 1.60% probability · 76th percentile
- Public exploits
- 1 in Exploit-DB · verified · first 29 December 2011
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- winn/winn guestbook
- Source
- cve@mitre.org
EPSS 1.6% since 26 October 2026; no change recorded yet. 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://code.google.com/p/winn-guestbook/issues/detail?id=34
- http://osvdb.org/78070
- http://secunia.com/advisories/47391
- http://www.exploit-db.com/exploits/18290
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72025
- http://code.google.com/p/winn-guestbook/issues/detail?id=34
- http://osvdb.org/78070
- http://secunia.com/advisories/47391
- http://www.exploit-db.com/exploits/18290
- https://exchange.xforce.ibmcloud.com/vulnerabilities/72025
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.