Vulnerability-Lookup

GHSA-R89P-QRRF-VPMC

Vulnerability from github – Published: 2026-09-15 18:32 – Updated: 2026-09-15 18:32

Details

Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 (Critical)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2023-54398"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-502"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-15T17:17:08Z",
    "severity": "CRITICAL"
  },
  "details": "Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.",
  "id": "GHSA-r89p-qrrf-vpmc",
  "modified": "2026-09-15T18:32:32Z",
  "published": "2026-09-15T18:32:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-54398"
    },
    {
      "type": "WEB",
      "url": "https://avd.aliyun.com/detail?id=AVD-2023-1686894"
    },
    {
      "type": "WEB",
      "url": "https://blog.csdn.net/qq_41904294/article/details/134277353"
    },
    {
      "type": "WEB",
      "url": "https://cn-sec.com/archives/2182384.html"
    },
    {
      "type": "WEB",
      "url": "https://security.yonyou.com/#/noticeInfo?id=400"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filemanageservlet"
    },
    {
      "type": "WEB",
      "url": "https://www.yonyou.com/Global"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2023-54398 (GCVE-0-2023-54398)

Vulnerability from cvelistv5 – Published: 2026-09-15 16:43 – Updated: 2026-09-15 17:30 X_Known Exploited Vulnerability

Title

Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

Summary

Severity

9.3 (Critical)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-15 17:30 UTC

CWE

CWE-502 - Deserialization of Untrusted Data

Assigner

VulnCheck mitre root

References

6 references

URL	Tags
https://security.yonyou.com/#/noticeInfo?id=400	vendor-advisorypatch
https://cn-sec.com/archives/2182384.html	technical-descriptionexploit
https://blog.csdn.net/qq_41904294/article/details…	technical-descriptionexploit
https://avd.aliyun.com/detail?id=AVD-2023-1686894	third-party-advisory
https://www.yonyou.com/Global/	product
https://www.vulncheck.com/advisories/yonyou-u8-cl…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
Yonyou	U8 Cloud	Affected: 1.0 (custom) Affected: 2.0 (custom) Affected: 2.1 (custom) Affected: 2.3 (custom) Affected: 2.5 (custom) Affected: 2.6 (custom) Affected: 2.65 (custom) Affected: 2.7 (custom) Affected: 3.0 (custom) Affected: 3.1 (custom) Affected: 3.2 (custom) Affected: 3.5 (custom) Affected: 3.6 (custom) Affected: 3.6sp (custom)

Date Public

2023-10-17 00:00

Credits

The Shadowserver Foundation

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2023-54398",
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                  },
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                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-15T17:30:16.079872Z",
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              "version": "2.3",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.