CVE-2026-63088Public exploitNetwork attack vector

Unauthenticated SSRF via single-address DNS validation

Published Jul 16, 2026 · Updated Jul 16, 2026

SSRF in the January media proxy in Stoat Backend before 0.14.0 allows remote attackers to read internal HTTP resources via crafted DNS records. The url_is_blacklisted function validates only the first resolved address, while reqwest retries every cached address and can connect to an unchecked private or loopback address. Exploitation requires control of a hostname with ordered DNS answers and January network reachability to the target; matching responses can expose internal content.

CVSS severity8.6
High
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in the January media proxy in Stoat Backend before 0.14.0 allows remote attackers to read internal HTTP resources via crafted DNS records. The url_is_blacklisted function validates only the first resolved address, while reqwest retries every cached address and can connect to an unchecked private or loopback address. Exploitation requires control of a hostname with ordered DNS answers and January network reachability to the target; matching responses can expose internal content.

The record

CVE
CVE-2026-63088
Published
Jul 16, 2026
Updated
Jul 16, 2026
Vendor
Stoat
Product
Stoat backend
Classifications
T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 16, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 16, 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=0 <0.14.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Stoat · Stoat backendversion=0 <0.14.0

Published CVSS scores

8.6GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1190Exploit Public-Facing Application

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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