CVE-2018-14951

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data...

6.1 MediumFix available

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

1.43%Up 0.2 points since Apr 14, 2021

What each source reports

NVD Score used 6.1

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Record: CVE-2018-14951
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Record: CVE-2018-14951
Updated: 2026-11-02

EUVDEUVD-2018-6833 No score

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Record: EUVD-2018-6833
Updated: 2026-11-03

GitHub AdvisoriesGHSA-39vf-phfq-v8qr 6.1

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data...

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Record: GHSA-39vf-phfq-v8qr
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

OSVUBUNTU-CVE-2018-14951 6.1

The mail message display page in SquirrelMail through 1.4.22 has XSS via a "<form action='data:text" attack.

Record: UBUNTU-CVE-2018-14951
CVSS 3.0: 6.1 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Updated: 2026-11-02

Affected products

squirrelmail

Affected packages

Affected packages
Package	Affected	Fixed
`squirrelmail` Debian:8 From an advisory covering 6 CVEs	before 2:1.4.23~svn20120406-2+deb8u3, plus listed versions 2:1.4.23~svn20120406-22:1.4.23~svn20120406-2+deb8u12:1.4.23~svn20120406-2+deb8u2	2:1.4.23~svn20120406-2+deb8u3
`squirrelmail` Ubuntu:14.04:LTS	before 2:1.4.23~svn20120406-2+deb8u3build0.14.04.1, plus listed versions 2:1.4.23~svn20120406-22:1.4.23~svn20120406-2+deb8u1build0.14.04.12:1.4.23~svn20120406-2+deb8u2build0.14.04.1	2:1.4.23~svn20120406-2+deb8u3build0.14.04.1
`squirrelmail` Ubuntu:16.04:LTS	before 2:1.4.23~svn20120406-2+deb8u3ubuntu0.16.04.1, plus listed versions 2:1.4.23~svn20120406-22:1.4.23~svn20120406-2ubuntu12:1.4.23~svn20120406-2ubuntu1.16.04.12:1.4.23~svn20120406-2+deb8u1ubuntu0.16.04.12:1.4.23~svn20120406-2+deb8u2build0.16.04.12:1.4.23~svn20120406-2+deb8u2ubuntu0.16.04.22:1.4.23~svn20120406-2+deb8u2ubuntu0.16.04.3	2:1.4.23~svn20120406-2+deb8u3ubuntu0.16.04.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
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-2018-14951 is a medium vulnerability (CVSS 6.1) in Squirrelmail, published August 5, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.43%, the 73rd percentile. Fixed in squirrelmail 2:1.4.23~svn20120406-2+deb8u3build0.14.04.1.

References

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