Is CVE-2017-20187 actively exploited?

No active exploitation of CVE-2017-20187 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-20187 be exploited remotely?

Yes. CVE-2017-20187 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-20187?

CVE-2017-20187 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2017-20187

CRITICAL

CVE-2017-20187

CWE-74Published: November 5, 2023· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

** UNSUPPORTED WHEN ASSIGNED ** A vulnerability was found in Magnesium-PHP up to 0.3.0. It has been classified as problematic. Affected is the function formatEmailString of the file src/Magnesium/Message/Base.php. The manipulation of the argument email/name leads to injection. Upgrading to version 0.3.1 is able to address this issue. The patch is identified as 500d340e1f6421007413cc08a8383475221c2604. It is recommended to upgrade the affected component. VDB-244482 is the identifier assigned to this vulnerability. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

NVD Source

Risk Analysis

Magnesium-PHP is vulnerable to injection attacks due to improper handling of email strings. This critical flaw is remotely exploitable and affects a product that is no longer supported.

No public exploit is known, and it is not in the CISA KEV.

Recommended Action

Upgrade to version 0.3.1; however, since the product is unsupported, migration to a maintained alternative is recommended.

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-2017-20187 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.