CVE-2011-5026

Name: CVE-2011-5026
Creator: NVD / NIST
Published: 2011-12-29T04:15:05.173+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.69%

Last modified Jun 16, 2026

CVE-2011-5026 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.69% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.69%

74.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Winn	Winn Guestbook	<= 2.4.8c	—
Winn	Winn Guestbook	2.4.1	Beta
Winn	Winn Guestbook	2.4.2	—
Winn	Winn Guestbook	2.4.3	—
Winn	Winn Guestbook	2.4.4	—
Winn	Winn Guestbook	2.4.5	—
Winn	Winn Guestbook	2.4.6	—
Winn	Winn Guestbook	2.4.7	—
Winn	Winn Guestbook	2.4.8b	—

References

Timeline

Published: Dec 29, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-5026?

How severe is CVE-2011-5026?

Severity scoring for CVE-2011-5026 is pending analysis. The EPSS model estimates a 1.69% probability of exploitation in the next 30 days.

How do I fix CVE-2011-5026?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-5026?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST