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Mallory
CriticalCISA KEVExploited in the wildPublic exploit

SSRF in Zimbra Collaboration Suite WebEx Zimlet (zimlet JSP enabled)

IdentifiersCVE-2020-7796CWE-918· Server-Side Request Forgery (SSRF)

Zimbra Collaboration Suite (ZCS) contains a server-side request forgery (SSRF) vulnerability in versions prior to 8.8.15 Patch 7 that is reachable when the WebEx zimlet is installed and zimlet JSP functionality is enabled. Under these conditions, an attacker can coerce the ZCS server into making unauthorized outbound HTTP requests to attacker-chosen destinations, including internal network services and cloud/instance metadata endpoints, potentially exposing sensitive information depending on what internal resources are reachable.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

SSRF enabling unauthorized internal network access/probing and potential sensitive data exposure by forcing the Zimbra server to issue arbitrary requests to internal services (including metadata endpoints) and other otherwise non-internet-reachable resources.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, remove/disable the WebEx zimlet and/or disable zimlet JSP functionality, as exploitation requires the WebEx zimlet to be installed and zimlet JSP to be enabled.

Remediation

Patch, then assume compromise.

Upgrade Zimbra Collaboration Suite (ZCS) to 8.8.15 Patch 7 or later (or otherwise apply vendor-provided fixes/mitigations for CVE-2020-7796).
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
ZimbraZimbra Collaboration Suiteapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

22 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware1

Malware families riding this exploit, with evidence and IOCs.

Detection signatures2

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity7

Community discussion across Reddit, Mastodon, and other social sources.