CVE-2026-71272Network attack vectorHinoki check available

Authenticated SSRF via webhook DNS rebinding

Published Aug 5, 2026 · Updated Aug 5, 2026

SSRF in Memos 0.29.1 and earlier allows remote authenticated users to reach internal services through a DNS-rebinding webhook URL. safeDialContext validates addresses from one DNS lookup but passes the original hostname to net.Dialer, which resolves it again when opening the connection. An authenticated account able to configure a webhook and control DNS is required; the server can then send POST requests to otherwise blocked internal services.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in Memos 0.29.1 and earlier allows remote authenticated users to reach internal services through a DNS-rebinding webhook URL. safeDialContext validates addresses from one DNS lookup but passes the original hostname to net.Dialer, which resolves it again when opening the connection. An authenticated account able to configure a webhook and control DNS is required; the server can then send POST requests to otherwise blocked internal services.

The record

CVE
CVE-2026-71272
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Memos
Product
Memos
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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 <=0.29.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Memos · Memosversion=0 <=0.29.1

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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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