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Fencer Intel
medium 4.3

CVE-2011-2023 json

Cross-site scripting (XSS) vulnerability in functions/mime.php in SquirrelMail before 1.4.22 allows remote attackers to inject arbitrary we…

published 2011-07-14 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-2017

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

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.

Patch / fix

  • squirrelmail RHEL 4 1.4.8-18.el4
  • squirrelmail RHEL 5 1.4.8-5.el5_7.13

red hat advisories RHSA-2012:0103

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-2023 updated cvss 4.3

SquirrelMail: XSS in <style> tag handling

  • Red Hat Enterprise Linux (v. 5 server) squirrelmail 1.4.8-5.el5_7.13 Red Hat Enterprise Linux AS version 4 squirrelmail 1.4.8-18.el4 Red Hat Enterprise Linux Desktop version 4 squirrelmail 1.4.8-18.el4 Red Hat Enterprise Linux ES version 4 squirrelmail 1.4.8-18.el4 Red Hat Enterprise Linux WS version 4 squirrelmail 1.4.8-18.el4 Red Hat RHEL Desktop Workstation (v. 5 client) squirrelmail 1.4.8-5.el5_7.13
    fixed: vendor fix RHSA-2012:0103

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.32% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-09).

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

Sources

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.