CVE-2020-20595Public exploitNetwork attack vector

Arbitrary account creation via forged administrator request

Published Dec 22, 2021 · Updated Aug 4, 2024

Cross-site request forgery in OPMS 1.3 and earlier allows remote attackers to create a user account through the /user/add endpoint. The endpoint processes a cross-origin POST containing attacker-chosen account fields under an administrator's authenticated session without verifying intentional submission. An authenticated administrator must visit the malicious link; the resulting account creation changes application access but does not establish host compromise.

CVSS severity6.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in OPMS 1.3 and earlier allows remote attackers to create a user account through the /user/add endpoint. The endpoint processes a cross-origin POST containing attacker-chosen account fields under an administrator's authenticated session without verifying intentional submission. An authenticated administrator must visit the malicious link; the resulting account creation changes application access but does not establish host compromise.

The record

CVE
CVE-2020-20595
Published
Dec 22, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-352, T1136, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 22, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
T1136Create Account
T1204.001Malicious Link

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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