CVE-2011-2023

Cross-site scripting (XSS) vulnerability in functions/mime.php in SquirrelMail before 1.4.22...

4.3 MediumFix available

Cross-site scripting (XSS) vulnerability in functions/mime.php in SquirrelMail before 1.4.22 allows remote attackers to inject arbitrary web script or HTML via a crafted STYLE element in an e-mail message.

Exploit likelihood

2.32%Up 0.5 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2011-2023
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness: CWE-79
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-2023
Updated: 2026-11-02

EUVDEUVD-2011-2017 No score

Record: EUVD-2011-2017
Updated: 2026-11-03

GitHub AdvisoriesGHSA-p9fx-gwhc-6m8m No score

Cross-site scripting (XSS) vulnerability in functions/mime.php in SquirrelMail before 1.4.22...

Record: GHSA-p9fx-gwhc-6m8m
Weakness: CWE-79
Updated: 2026-11-02

Affected products

squirrelmail

Affected packages

Affected packages
Package	Affected	Fixed
`squirrelmail` Debian:5.0	before 2:1.4.15-4+lenny5, plus listed versions 2:1.4.15-42:1.4.15-4+lenny12:1.4.15-4+lenny22:1.4.15-4+lenny3.1	2:1.4.15-4+lenny5
`squirrelmail` Debian:6.0	before 2:1.4.21-2, plus listed versions 2:1.4.21-1	2:1.4.21-2
`squirrelmail` Red Hat:enterprise_linux:4::as	before 0:1.4.8-18.el4	0:1.4.8-18.el4
`squirrelmail` Red Hat:enterprise_linux:4::desktop	before 0:1.4.8-18.el4	0:1.4.8-18.el4
`squirrelmail` Red Hat:enterprise_linux:4::es	before 0:1.4.8-18.el4	0:1.4.8-18.el4
`squirrelmail` Red Hat:enterprise_linux:4::ws	before 0:1.4.8-18.el4	0:1.4.8-18.el4
`squirrelmail` Red Hat:enterprise_linux:5::client_workstation	before 0:1.4.8-5.el5_7.13	0:1.4.8-5.el5_7.13
`squirrelmail` Red Hat:enterprise_linux:5::server	before 0:1.4.8-5.el5_7.13	0:1.4.8-5.el5_7.13

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-2023 is a medium vulnerability (CVSS 4.3) in Squirrelmail, published July 14, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.32%, the 83rd percentile. Fixed in squirrelmail 2:1.4.15-4+lenny5.

References

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