CVE-2026-59085Network attack vector

Server-side request forgery via webhook delivery

Published Aug 21, 2026 · Updated Aug 21, 2026

SSRF in Apache CloudStack's webhook module 4.20.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0 allows attackers to trigger outbound requests. Apache has disclosed only that webhook delivery requests trigger the SSRF and has not identified the affected function or incorrect destination-handling operation. The required CloudStack role, reachable destination classes, and resulting data exposure are not publicly specified.

CVSS severityUnavailable
Unscored
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Apache CloudStack's webhook module 4.20.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0 allows attackers to trigger outbound requests. Apache has disclosed only that webhook delivery requests trigger the SSRF and has not identified the affected function or incorrect destination-handling operation. The required CloudStack role, reachable destination classes, and resulting data exposure are not publicly specified.

The record

CVE
CVE-2026-59085
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
The Apache Software Foundation
Product
Apache CloudStack
Classifications
CWE-918, T1090
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.20.0.0 <=4.20.3.0
  2. Affected versionversion=4.21.0.0 <=4.22.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Apache Software Foundation · Apache CloudStackversion=4.20.0.0 <=4.20.3.0; version=4.21.0.0 <=4.22.1.0

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1090Proxy

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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