CVE-2020-14933Network attack vector

Disputed object injection via POST attachment deserialization

Published Jun 20, 2020 · Updated Aug 4, 2024

PHP object injection in SquirrelMail 1.4.22 allows remote authenticated users to cause unspecified impact via a crafted HTTP POST. In compose.php, the $attachments value taken from POST data is passed to PHP's unserialize() function without a safe serialization format. The SquirrelMail project states that required magic methods and attack-relevant loaded classes are absent, so it considers all versions unaffected and the claimed object-injection consequence unachievable.

CVSS severity8.8
High
EPSS probability1.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

PHP object injection in SquirrelMail 1.4.22 allows remote authenticated users to cause unspecified impact via a crafted HTTP POST. In compose.php, the $attachments value taken from POST data is passed to PHP's unserialize() function without a safe serialization format. The SquirrelMail project states that required magic methods and attack-relevant loaded classes are absent, so it considers all versions unaffected and the claimed object-injection consequence unachievable.

The record

CVE
CVE-2020-14933
Published
Jun 20, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-502
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 20, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.5NIST NVDAV:N/AC:L/Au:S/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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