CVE-2026-19826Network attack vector

Unauthenticated code execution via unfiltered Hessian deserialization

Published Aug 14, 2026 · Updated Aug 14, 2026

Deserialization in AllData 0.6.0 through 0.6.8 allows remote attackers to execute code through the xxl-rpc TCP listener. The Netty decoder sends length-prefixed attacker bytes to Hessian2Input.readObject without class filtering before the access-token check. Network reachability to TCP port 7080 is sufficient by default; successful execution requires a compatible gadget on the service classpath and runs as the service account.

CVSS severity7.3
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

Deserialization in AllData 0.6.0 through 0.6.8 allows remote attackers to execute code through the xxl-rpc TCP listener. The Netty decoder sends length-prefixed attacker bytes to Hessian2Input.readObject without class filtering before the access-token check. Network reachability to TCP port 7080 is sufficient by default; successful execution requires a compatible gadget on the service classpath and runs as the service account.

The record

CVE
CVE-2026-19826
Published
Aug 14, 2026
Updated
Aug 14, 2026
Vendor
Hangzhou Aoling Data Technology
Product
AllData
Classifications
CWE-20, CWE-502, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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=0.6.0
  2. Affected versionversion=0.6.1
  3. Affected versionversion=0.6.2
  4. Affected versionversion=0.6.3
  5. Affected versionversion=0.6.4
  6. Affected versionversion=0.6.5
  7. Affected versionversion=0.6.6
  8. Affected versionversion=0.6.7
  9. Affected versionversion=0.6.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Hangzhou Aoling Data Technology · AllDataversion=0.6.0; version=0.6.1; version=0.6.2; version=0.6.3; version=0.6.4; version=0.6.5; version=0.6.6; version=0.6.7; version=0.6.8

Published CVSS scores

5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
7.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
7.5VulDBAV:N/AC:L/Au:N/C:P/I:P/A: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.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-502Deserialization of Untrusted Data
T1190Exploit Public-Facing Application

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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