CVE-2026-73080Network attack vector

Unauthenticated SSRF via unvalidated remote endpoint

Published Aug 11, 2026 · Updated Aug 11, 2026

SSRF in SeaweedFS before 4.24 allows remote attackers to read responses from arbitrary hosts through an unauthenticated volume-server RPC. VolumeServer.FetchAndWriteNeedle passes a caller-supplied endpoint to the S3 remote-storage client without authentication or destination validation and returns the fetched data. Reachability to the volume server's gRPC port is sufficient; default deployments expose the RPC without credentials, enabling access to internal services and cloud metadata.

CVSS severity9.3
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in SeaweedFS before 4.24 allows remote attackers to read responses from arbitrary hosts through an unauthenticated volume-server RPC. VolumeServer.FetchAndWriteNeedle passes a caller-supplied endpoint to the S3 remote-storage client without authentication or destination validation and returns the fetched data. Reachability to the volume server's gRPC port is sufficient; default deployments expose the RPC without credentials, enabling access to internal services and cloud metadata.

The record

CVE
CVE-2026-73080
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
SeaweedFS
Product
SeaweedFS
Classifications
CWE-918, CAPEC-664, T1552.005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 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=< 4.24

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SeaweedFS · SeaweedFSversion=< 4.24

Published CVSS scores

9.3GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
CAPEC-664Server Side Request Forgery
T1552.005Unsecured Credentials: Cloud Instance Metadata API

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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