Is CVE-2026-43936 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-43936 being exploited in the wild.

How severe is CVE-2026-43936?

Medium severity, with a CVSS score of 4.3, published 26 May 2026.

Is there a fix for CVE-2026-43936?

A patch was published on 2026-04-25: Fixes committed to repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-43936 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-43936?

Check whether you run E107inc E107 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-43936: e107 SSRF in Media Manager remote file fetcher

CVE-2026-43936 · Severity: medium · CVSS 4.3 · Published 2026-05-26

e107 is a content management system used to build and manage websites. A security flaw in its media management tool allows authenticated administrators to force the server to make requests to internal network locations. This could allow an attacker to scan internal ports, bypass firewalls, or access sensitive information from the local environment that is not intended to be public.

Technologies: E107inc E107. Vendors: E107inc.

Quick answers

Is CVE-2026-43936 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-43936 being exploited in the wild.
How severe is CVE-2026-43936?: Medium severity, with a CVSS score of 4.3, published 26 May 2026.
Which products and versions are affected?: E107inc E107 < 2.3.4.
Is there a fix for CVE-2026-43936?: A patch was published on 2026-04-25: Fixes committed to repository Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-43936 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-43936?: Check whether you run E107inc E107 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A Server-Side Request Forgery (SSRF) vulnerability exists in e107's Media Manager due to insufficient validation of remote URLs in the 'Image/File URL' field. The 'e_file::getRemoteFile()' and 'getRemoteContent()' methods failed to restrict IP ranges or protocols, allowing authenticated users with administrative access to probe internal services. Attackers can use this to perform port scans on the local host or access internal resources. The vulnerability also included a bypass mechanism using IPv4-mapped IPv6 addresses (e.g., ::ffff:127.0.0.1) which evaded standard IP filters. Version 2.3.4 fixes this by implementing 'isUrlSafe()' checks, canonicalizing IP addresses, and restricting protocols to HTTP/HTTPS.

Affected products

e107inc e107 < 2.3.4

Timeline

2026-04-25: patched: Fixes committed to repository
2026-05-05: advisory: GitHub Security Advisory published
2026-05-26: disclosed: CVE published to NVD

References

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