CVE-2026-63004Public exploitNetwork attack vector

Internal request and secret disclosure via addon URLs

Published Aug 21, 2026 · Updated Aug 21, 2026

SSRF in Unleash before 7.5.2, 7.6.0 through 7.6.4, and 8.0.0 through 8.0.1 allows remote authenticated users to reach internal services. Addon.fetchRetry sends operator-controlled webhook and integration URLs without blocking loopback, link-local, private, or metadata addresses, and forwards configured headers and event bodies. Root CREATE_ADDON or UPDATE_ADDON permission is required; successful requests can probe internal hosts, expose configured secrets, or submit feature-event data to internal services.

CVSS severity5.5
Medium
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Unleash before 7.5.2, 7.6.0 through 7.6.4, and 8.0.0 through 8.0.1 allows remote authenticated users to reach internal services. Addon.fetchRetry sends operator-controlled webhook and integration URLs without blocking loopback, link-local, private, or metadata addresses, and forwards configured headers and event bodies. Root CREATE_ADDON or UPDATE_ADDON permission is required; successful requests can probe internal hosts, expose configured secrets, or submit feature-event data to internal services.

The record

CVE
CVE-2026-63004
Published
Aug 21, 2026
Updated
Aug 21, 2026
Vendor
Unleash
Product
Unleash
Classifications
CWE-918, T1046
Attack vector
network
Privileges
authenticated

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=< 7.5.2
  2. Affected versionversion=>= 7.6.0, < 7.6.5
  3. Affected versionversion=>= 8.0.0, < 8.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Unleash · Unleashversion=< 7.5.2; version=>= 7.6.0, < 7.6.5; version=>= 8.0.0, < 8.0.2

Published CVSS scores

5.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1046Network Service Scanning

Public exploit references

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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