CVE-2010-4555

Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail 1.4.21 and earlier allow...

4.3 MediumFix available

Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail 1.4.21 and earlier allow remote attackers to inject arbitrary web script or HTML via vectors involving (1) drop-down selection lists, (2) the > (greater than) character in the SquirrelSpell spellchecking plugin, and (3) errors associated with the Index Order (aka options_order) page.

Exploit likelihood

2.35%Up 0.4 points since Feb 4, 2022

What each source reports

NVD Score used 4.3

Record: CVE-2010-4555
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-2010-4555
Updated: 2026-11-02

EUVDEUVD-2010-4521 No score

Record: EUVD-2010-4521
Updated: 2026-11-03

GitHub AdvisoriesGHSA-cwvc-h2j5-j87h No score

Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail 1.4.21 and earlier allow...

Record: GHSA-cwvc-h2j5-j87h
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-2010-4555 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 2.35%, the 83rd percentile. Fixed in squirrelmail 2:1.4.15-4+lenny5.

References

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