CVE-2020-35313

Wondercms vulnerability

CVSS

9.8

EPSS

45.2%

EPSS pct

99th

Exploited

No known

A server-side request forgery (SSRF) vulnerability in the addCustomThemePluginRepository function in index.php in WonderCMS 3.1.3 allows remote attackers to execute arbitrary code via a crafted URL to the theme/plugin installer.

Affected vendor

Wondercms

Affected product

Wondercms

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Published

2021-04-20

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 45.2% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it among the most exploited CVEs currently tracked.

Check your external exposure to CVE-2020-35313

Confirm whether Wondercms Wondercms is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2020-35313.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-35313

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-35313 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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