Is CVE-2023-28115 actively exploited?

No active exploitation of CVE-2023-28115 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2023-28115 be exploited remotely?

Yes. CVE-2023-28115 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2023-28115?

CVE-2023-28115 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2023-28115

CWE-502Published: March 17, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official 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.

NVD Source

Risk Analysis

Snappy PHP library versions prior to 1.4.2 are vulnerable to PHAR deserialization, which can lead to remote code execution. This critical flaw occurs when the library fails to validate protocols before processing files.

No public exploit is known, and it is not in the CISA KEV catalog. It is remotely exploitable with low attack complexity.

Recommended Action

Upgrade Snappy to version 1.4.2 or later and ensure that user-controlled input cannot reach the deserialization functions.

Generated by the CTIWATCH analysis pipeline from this CVE's metadata (CVSS, EPSS, KEV status, exploit intelligence). Verify against vendor advisories before acting.

Technical Analysis

CVE-2023-28115 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-502): Insecure deserialization vulnerabilities allow attackers to inject malicious objects during deserialization, potentially enabling remote code execution.