CVE-2011-2023

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.

Published: 2011-07-14 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2011-2023 is rated Low Risk (38.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.43%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2011-2023

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-12-28 0.69% 0.43% -0.26%
2 2025-12-27 0.43% 0.69% +0.26%
3 2025-12-07 — 0.43% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2011-2023

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2011-2023

OS Trackers for CVE-2011-2023

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2011-2023
ubuntu low CVE-2011-2023 low priority: Ubuntu including 1 source packages (squirrelmail), 10 status rows across 10 suites (hardy, lucid, maverick, natty, oneiric, precise, quantal, raring, saucy, upstream): not-affected 5, ignored 4, released 1. https://ubuntu.com/security/CVE-2011-2023

Affected software / configurations for CVE-2011-2023

Vendor Product Version Raw CPE
squirrelmail squirrelmail <= 1.4.21 cpe:2.3:a:squirrelmail:squirrelmail:*:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.1 cpe:2.3:a:squirrelmail:squirrelmail:0.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.1.1 cpe:2.3:a:squirrelmail:squirrelmail:0.1.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.1.2 cpe:2.3:a:squirrelmail:squirrelmail:0.1.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.2 cpe:2.3:a:squirrelmail:squirrelmail:0.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.2.1 cpe:2.3:a:squirrelmail:squirrelmail:0.2.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.3 cpe:2.3:a:squirrelmail:squirrelmail:0.3:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.3.1 cpe:2.3:a:squirrelmail:squirrelmail:0.3.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.3pre1 cpe:2.3:a:squirrelmail:squirrelmail:0.3pre1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.3pre2 cpe:2.3:a:squirrelmail:squirrelmail:0.3pre2:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.4 cpe:2.3:a:squirrelmail:squirrelmail:0.4:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.4pre1 cpe:2.3:a:squirrelmail:squirrelmail:0.4pre1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.4pre2 cpe:2.3:a:squirrelmail:squirrelmail:0.4pre2:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.5 cpe:2.3:a:squirrelmail:squirrelmail:0.5:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.5pre1 cpe:2.3:a:squirrelmail:squirrelmail:0.5pre1:*:*:*:*:*:*:*
squirrelmail squirrelmail 0.5pre2 cpe:2.3:a:squirrelmail:squirrelmail:0.5pre2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0 cpe:2.3:a:squirrelmail:squirrelmail:1.0:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.1 cpe:2.3:a:squirrelmail:squirrelmail:1.0.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.2 cpe:2.3:a:squirrelmail:squirrelmail:1.0.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.3 cpe:2.3:a:squirrelmail:squirrelmail:1.0.3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.4 cpe:2.3:a:squirrelmail:squirrelmail:1.0.4:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.5 cpe:2.3:a:squirrelmail:squirrelmail:1.0.5:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0.6 cpe:2.3:a:squirrelmail:squirrelmail:1.0.6:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0pre1 cpe:2.3:a:squirrelmail:squirrelmail:1.0pre1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0pre2 cpe:2.3:a:squirrelmail:squirrelmail:1.0pre2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.0pre3 cpe:2.3:a:squirrelmail:squirrelmail:1.0pre3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.1.0 cpe:2.3:a:squirrelmail:squirrelmail:1.1.0:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.1.1 cpe:2.3:a:squirrelmail:squirrelmail:1.1.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.1.2 cpe:2.3:a:squirrelmail:squirrelmail:1.1.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.1.3 cpe:2.3:a:squirrelmail:squirrelmail:1.1.3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2 cpe:2.3:a:squirrelmail:squirrelmail:1.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.0 cpe:2.3:a:squirrelmail:squirrelmail:1.2.0:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.0 cpe:2.3:a:squirrelmail:squirrelmail:1.2.0:rc3:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.1 cpe:2.3:a:squirrelmail:squirrelmail:1.2.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.2 cpe:2.3:a:squirrelmail:squirrelmail:1.2.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.3 cpe:2.3:a:squirrelmail:squirrelmail:1.2.3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.4 cpe:2.3:a:squirrelmail:squirrelmail:1.2.4:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.5 cpe:2.3:a:squirrelmail:squirrelmail:1.2.5:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.6 cpe:2.3:a:squirrelmail:squirrelmail:1.2.6:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.6 cpe:2.3:a:squirrelmail:squirrelmail:1.2.6:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.7 cpe:2.3:a:squirrelmail:squirrelmail:1.2.7:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.8 cpe:2.3:a:squirrelmail:squirrelmail:1.2.8:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.9 cpe:2.3:a:squirrelmail:squirrelmail:1.2.9:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.10 cpe:2.3:a:squirrelmail:squirrelmail:1.2.10:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.2.11 cpe:2.3:a:squirrelmail:squirrelmail:1.2.11:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.3.0 cpe:2.3:a:squirrelmail:squirrelmail:1.3.0:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.3.1 cpe:2.3:a:squirrelmail:squirrelmail:1.3.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.3.2 cpe:2.3:a:squirrelmail:squirrelmail:1.3.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4 cpe:2.3:a:squirrelmail:squirrelmail:1.4:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4 cpe:2.3:a:squirrelmail:squirrelmail:1.4:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.0 cpe:2.3:a:squirrelmail:squirrelmail:1.4.0:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.0 cpe:2.3:a:squirrelmail:squirrelmail:1.4.0:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.0 cpe:2.3:a:squirrelmail:squirrelmail:1.4.0:rc2a:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.0-r1 cpe:2.3:a:squirrelmail:squirrelmail:1.4.0-r1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.1 cpe:2.3:a:squirrelmail:squirrelmail:1.4.1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2-r1 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2-r1:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2-r2 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2-r2:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2-r3 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2-r3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2-r4 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2-r4:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.2-r5 cpe:2.3:a:squirrelmail:squirrelmail:1.4.2-r5:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.3 cpe:2.3:a:squirrelmail:squirrelmail:1.4.3:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.3 cpe:2.3:a:squirrelmail:squirrelmail:1.4.3:r3:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.3 cpe:2.3:a:squirrelmail:squirrelmail:1.4.3:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.3a cpe:2.3:a:squirrelmail:squirrelmail:1.4.3a:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.3aa cpe:2.3:a:squirrelmail:squirrelmail:1.4.3aa:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.4 cpe:2.3:a:squirrelmail:squirrelmail:1.4.4:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.4 cpe:2.3:a:squirrelmail:squirrelmail:1.4.4:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.5 cpe:2.3:a:squirrelmail:squirrelmail:1.4.5:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.5 cpe:2.3:a:squirrelmail:squirrelmail:1.4.5:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.6 cpe:2.3:a:squirrelmail:squirrelmail:1.4.6:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.6 cpe:2.3:a:squirrelmail:squirrelmail:1.4.6:rc1:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.6_cvs cpe:2.3:a:squirrelmail:squirrelmail:1.4.6_cvs:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.7 cpe:2.3:a:squirrelmail:squirrelmail:1.4.7:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.8 cpe:2.3:a:squirrelmail:squirrelmail:1.4.8:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.8.4fc6 cpe:2.3:a:squirrelmail:squirrelmail:1.4.8.4fc6:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.9 cpe:2.3:a:squirrelmail:squirrelmail:1.4.9:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.9a cpe:2.3:a:squirrelmail:squirrelmail:1.4.9a:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.10 cpe:2.3:a:squirrelmail:squirrelmail:1.4.10:*:*:*:*:*:*:*
squirrelmail squirrelmail 1.4.10a cpe:2.3:a:squirrelmail:squirrelmail:1.4.10a:*:*:*:*:*:*:*

References for CVE-2011-2023

cvelogic Threat Intelligence