$ cve CVE-2023-28115 JSON

CVE-2023-28115

9.8

CRITICAL · CVSS 3.1 · EPSS 2.8% (pctl 86)

In your normal cycle

Critical by CVSS (9.8), but no sign of active exploitation.

Description

Snappy is a PHP library allowing thumbnail, snapshot or PDF generation from a url or a html page. Prior to version 1.4.2, Snappy is vulnerable to PHAR deserialization due to a lack of checking on the protocol before passing it into the `file_exists()` function. If an attacker can upload files of any type to the server he can pass in the phar:// protocol to unserialize the uploaded file and instantiate arbitrary PHP objects. This can lead to remote code execution especially when snappy is used with frameworks with documented POP chains like Laravel/Symfony vulnerable developer code. If a user can control the output file from the `generateFromHtml()` function, it will invoke deserialization. This vulnerability is capable of remote code execution if Snappy is used with frameworks or developer code with vulnerable POP chains. It has been fixed in version 1.4.2.

Scoring

CVSS	9.8 (CRITICAL, v3.1)
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS	2.76% — more likely to be exploited than 86% of all CVEs
Weakness	CWE-502
On CISA KEV	no
Public exploit	none known
Published	2023-03-17
Last modified	2026-06-17

Affected (1)

Vendor	Product
knplabs	snappy

References

→ the Explorer · watch your stack · NVD