CVE-2026-2074: O2OA HTTP POST Request check xml external entity reference

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-02-07 · updated 2026-06-17
Weakness: CWE-610

Description

A vulnerability was identified in O2OA up to 9.0.0. This impacts an unknown function of the file /x_program_center/jaxrs/mpweixin/check of the component HTTP POST Request Handler. The manipulation leads to xml external entity reference. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Affected products

O2OA: through 9.0.0

References

https://github.com/SourByte05/SourByte-Lab/issues/7
https://vuldb.com/?ctiid.344640
https://vuldb.com/?id.344640
https://vuldb.com/?submit.745486
https://vuldb.com/?submit.745489

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