CVE-2020-8086Network attack vector

Remote administrator access via username-only JID checks

Published Jan 28, 2020 · Updated Aug 4, 2024

Authorization bypass in Prosody LDAP modules through 2020-01-27 allows remote attackers to obtain administrator functionality. The mod_auth_ldap and mod_auth_ldap2 is_admin() implementations compare only the JID user part and ignore its domain, so a remote account sharing a local administrator's username passes the check. Exposure requires either LDAP module plus ldap_admin_filter, ldap_admins, or the LDAP admin option; affected requests gain admin-only functions.

CVSS severity9.8
Critical
EPSS probability1.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authorization bypass in Prosody LDAP modules through 2020-01-27 allows remote attackers to obtain administrator functionality. The mod_auth_ldap and mod_auth_ldap2 is_admin() implementations compare only the JID user part and ignore its domain, so a remote account sharing a local administrator's username passes the check. Exposure requires either LDAP module plus ldap_admin_filter, ldap_admins, or the LDAP admin option; affected requests gain admin-only functions.

The record

CVE
CVE-2020-8086
Published
Jan 28, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, T1068
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 28, 2020CVE 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

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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