CVE-2025-27136Public exploitNetwork attack vector

Internal response disclosure via external entity resolution

Published Mar 10, 2025 · Updated Mar 10, 2025

XXE injection in Robothy LocalS3 before 1.21 allows remote attackers to make internal HTTP requests through bucket-creation XML. The CreateBucketConfiguration location parser accepts DTDs and resolves attacker-defined external entities, then stores the fetched response as the bucket location. Network access to the unauthenticated service is sufficient to retrieve that internal response through GetBucketLocation.

CVSS severityUnavailable
Unscored
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

XXE injection in Robothy LocalS3 before 1.21 allows remote attackers to make internal HTTP requests through bucket-creation XML. The CreateBucketConfiguration location parser accepts DTDs and resolves attacker-defined external entities, then stores the fetched response as the bucket location. Network access to the unauthenticated service is sufficient to retrieve that internal response through GetBucketLocation.

The record

CVE
CVE-2025-27136
Published
Mar 10, 2025
Updated
Mar 10, 2025
Vendor
Robothy
Product
LocalS3
Classifications
CWE-611, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 10, 2025Record 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=< 1.21

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Robothy · LocalS3version=< 1.21

Published CVSS scores

5.5GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:P

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

CWE-611Improper Restriction of XML External Entity Reference
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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