CVE-2026-81032Public exploitNetwork attack vector

Unauthenticated configuration disclosure and modification via HTTP

Published Aug 26, 2026 · Updated Aug 26, 2026

Missing authentication in the runtime web service in Vesoft NebulaGraph 3.8.0 and earlier allows remote attackers to read and modify flags. WebService.cpp binds the daemon HTTP listener to all interfaces and registers GET and PUT /flags without an authentication check; SetFlagsHandler.cpp parses each supplied JSON entry and passes it to gflags::SetCommandLineOption. Network reachability to a daemon web-service port is sufficient to expose paths and security settings or change transport security, logging, login-lockout, and other runtime behavior without a restart.

CVSS severity9.3
Critical
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the runtime web service in Vesoft NebulaGraph 3.8.0 and earlier allows remote attackers to read and modify flags. WebService.cpp binds the daemon HTTP listener to all interfaces and registers GET and PUT /flags without an authentication check; SetFlagsHandler.cpp parses each supplied JSON entry and passes it to gflags::SetCommandLineOption. Network reachability to a daemon web-service port is sufficient to expose paths and security settings or change transport security, logging, login-lockout, and other runtime behavior without a restart.

The record

CVE
CVE-2026-81032
Published
Aug 26, 2026
Updated
Aug 26, 2026
Vendor
Vesoft
Product
NebulaGraph
Classifications
CWE-306, T1562.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 26, 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 <=3.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vesoft · NebulaGraphversion=0 <=3.8.0

Published CVSS scores

9.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
9.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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 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 exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1562.001Impair Defenses: Disable or Modify Tools

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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