CVE-2025-8020Public exploitNetwork attack vector

SSRF filter bypass via omitted multicast range

Published Jul 23, 2025 · Updated Aug 22, 2026

SSRF in frenchbread private-ip 3.0.2 and earlier allows remote attackers to bypass address filtering with multicast destinations. The PRIVATE_IP_RANGES allowlist omits 224.0.0.0/4, so the exported check treats multicast IP addresses and hostnames resolving to them as public. Exploitation requires a consuming server to use that result as an SSRF guard on attacker-controlled input, enabling requests to multicast-reachable services.

CVSS severity8.2
High
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 frenchbread private-ip 3.0.2 and earlier allows remote attackers to bypass address filtering with multicast destinations. The PRIVATE_IP_RANGES allowlist omits 224.0.0.0/4, so the exported check treats multicast IP addresses and hostnames resolving to them as public. Exploitation requires a consuming server to use that result as an SSRF guard on attacker-controlled input, enabling requests to multicast-reachable services.

The record

CVE
CVE-2025-8020
Published
Jul 23, 2025
Updated
Aug 22, 2026
Vendor
frenchbread
Product
private-ip
Classifications
CWE-918
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 22, 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 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

frenchbread · private-ipversion=0 <*

Published CVSS scores

7.8GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
8.2GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 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

CWE-918Server-Side Request Forgery (SSRF)

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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