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Vulnerability record · CVE-2020-14933 · published 20 June 2020

CVE-2020-14933: Squirrelmail deserialization of untrusted data vulnerability

Squirrelmail · Squirrelmail

compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request. NOTE: the vendor disputes this because these two conditions for PHP object injection are not satisfied: existence of a PHP magic method (such as __wakeup or __destruct), and any attack-relevant classes must be declared before unserialize is called (or must be autoloaded).

8.8 CVSS 3.1 High EPSS 1.4% · top 28.3% CWE-502 · Deserialization of untrusted data
8.8CVSS 3.1 base score, v2 6.5
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which originates from an HTTP POST request. NOTE: the vendor disputes this because these two conditions for PHP object injection are not satisfied: existence of a PHP magic method (such as __wakeup or __destruct), and any attack-relevant classes must be declared before unserialize is called (or must be autoloaded).

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.openwall.com/lists/oss-security/2020/06/20/1 Mailing ListThird Party Advisory
https://www.openwall.com/lists/oss-security/2020/06/20/1 Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2004-0521Sgi propack vulnerabilitySQL injection vulnerability in SquirrelMail before 1.4.3 RC1 allows remote attackers to execute unauthorized SQL statements, with unknown impact, pro…EPSS 3.2%10.0CVE-2002-0516Squirrelmail vulnerabilitySquirrelMail 1.2.5 and earlier allows authenticated SquirrelMail users to execute arbitrary commands by modifying the THEME variable in a cookie.EPSS 11%9.8CVE-2020-14932Squirrelmail deserialization of untrusted data vulnerabilitycompose.php in SquirrelMail 1.4.22 calls unserialize for the $mailtodata value, which originates from an HTTP GET request. This is related to mailto.…EPSS 1.4%8.8CVE-2018-8741Squirrelmail path traversal vulnerabilityA directory traversal flaw in SquirrelMail 1.4.22 allows an authenticated attacker to exfiltrate (or potentially delete) files from the hosting serve…EPSS 4.2%8.8CVE-2017-7692Squirrelmail improper input validation vulnerabilitySquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows post-authentication remote code execution via a sendmail.cf file that is mis…EPSS 32%7.5CVE-2007-3636Squirrelmail gpg plugin vulnerabilityMultiple unspecified vulnerabilities in the G/PGP (GPG) Plugin 2.1 for Squirrelmail allow remote attackers to execute arbitrary commands via unspecif…EPSS 3.1%7.5CVE-2007-2631Squirrelmail vulnerabilityCross-site request forgery (CSRF) vulnerability in SquirrelMail 1.4.8-4.fc6 and earlier allows remote attackers to perform unspecified actions as arb…EPSS 1.4%7.5CVE-2006-2842SquirrelMail plugin.php remote file inclusion via plugins arraySquirrelMail 1.4.6 and earlier contains a remote file inclusion flaw in functions/plugin.php: when register_globals is enabled and magic_quotes_gpc i…EPSS 47%analysed

Source: NIST National Vulnerability Database (record CVE-2020-14933), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.