WonderCMS version 2.4.0 contains a Stored Cross-Site Scripting on File Upload through SVG vulnerability in uploadFileAction(), 'svg' => 'im…

published 2018-02-09 8y ago modified 2026-06-17 4mo ago also EUVD-2018-1817

cvss: 4.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits: 0; none known

WonderCMS version 2.4.0 contains a Stored Cross-Site Scripting on File Upload through SVG vulnerability in uploadFileAction(), 'svg' => 'image/svg+xml' that can result in An attacker can execute arbitrary script on an unsuspecting user's browser. This attack appear to be exploitable via Crafted SVG File.

Patch / fix

links 1

github.com/robiso/wondercms/blob/ea640a02b4b8d88835d2e01600d24b23176f… advisory

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Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	4.4	CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

github.com /robiso/wondercms/blob/ea640a02b4b8d88835d2e01600d24b23176fb665/index.php#L737
patch, third-party-advisory
github.com /robiso/wondercms/issues/56
third-party-advisory

Sources

CVE List CVE-2018-1000062
NVD CVE-2018-1000062

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