CVE-2011-5026 json
Cross-site scripting (XSS) vulnerability in the addPost function in data/functions.php in Winn GuestBook before 2.4.8d allows remote attack…
published 2011-12-29 14 y ago modified 2026-06-16 4 mo ago also EUVD-2011-4931
- cvss
- 4.3
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 75%
- public exploits
- 1
- Exploit-DB
Summary
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.
Timeline
- First public exploit (EDB-18290)
- Published
Exploit prediction
1.60% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-18290 Winn Guestbook 2.4.8c - Persistent Cross-Site Scripting webapps, 2011-12-29
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
exploit-db.com
/exploits/18290
exploit
-
exchange.xforce.ibmcloud.com
/vulnerabilities/72025
vdb-entry
- code.google.com /p/winn-guestbook/issues/detail?id=34
-
osvdb.org
/78070
vdb-entry
-
secunia.com
/advisories/47391
third-party-advisory
Sources
- CVE List CVE-2011-5026
- NVD CVE-2011-5026
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.