CVE-2026-19826: alldatacenter alldata xxl-rpc Listener HessianSerializer.java Hessian2Input.readObject deserialization

Severity: high (CVSS 7.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-14 · updated 2026-08-18
Weakness: CWE-20

Description

A vulnerability was detected in alldatacenter alldata up to 0.6.8. This affects the function Hessian2Input.readObject of the file /serialize/impl/HessianSerializer.java of the component xxl-rpc Listener. The manipulation results in deserialization. The attack may be performed from remote. The exploit is now public and may be used. The project closed the issue report as "not planned" without any further explanation.

Affected products

alldatacenter alldata: 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5 (+3)

References

https://github.com/alldatacenter/alldata/
https://github.com/alldatacenter/alldata/issues/832
https://vuldb.com/cve/CVE-2026-19826
https://vuldb.com/submit/870236
https://vuldb.com/vuln/389959
https://vuldb.com/vuln/389959/cti
https://github.com/alldatacenter/alldata/issues/832

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