compose.php in SquirrelMail 1.4.22 calls unserialize for the $attachments value, which…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-502.
Summary
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).
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:squirrelmail:squirrelmail:1.4.22:*:*:*:*:*:*:* | 1.4.22 | Vulnerable | SquirrelMail |
- cpe:2.3:a:squirrelmail:squirrelmail:1.4.22:*:*:*:*:*:*:* Versions 1.4.22 Vulnerable ·SquirrelMail
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
Timeline
- 2026-10-02 Threatist record created from CVE-2020-14933
- 2026-10-03 Alias added: GHSA-gh2w-wqm3-32m4
References
More Squirrelmail vulnerabilities
- TI-2006-02750 PHP remote file inclusion vulnerability in functions/plugin.php in SquirrelMail 1.4.6 and… CVSS 2.0HIGH 7.5
- TI-2017-05328 SquirrelMail 1.4.22 (and other versions before 20170427_0200-SVN) allows… CVSS 3.0HIGH 8.8
- TI-2002-00501 SquirrelMail 1.2.5 and earlier allows authenticated SquirrelMail users to execute… CVSS 2.0HIGH 10.0
- TI-2002-01101 Cross-site scripting vulnerabilities in SquirrelMail 1.2.7 and earlier allows remote… CVSS 2.0HIGH 7.5
- TI-2004-00468 Multiple cross-site scripting (XSS) vulnerabilities in SquirrelMail 1.4.2 allow remote… CVSS 2.0MEDIUM 6.8
- TI-2004-00470 SQL injection vulnerability in SquirrelMail before 1.4.3 RC1 allows remote attackers to… CVSS 2.0HIGH 10.0
Sources
- CVE-2020-14933 · CVE Program
- CVE-2020-14933 · NVD
- FIRST EPSS
- GHSA-gh2w-wqm3-32m4 · GitHub Advisory Database · CC BY 4.0
- CVE-2020-14933 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences