HOMEVULNERABILITIESCVE-2020-8086
CRITICAL

CVE-2020-8086

CWE-863Published: January 28, 2020· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

The mod_auth_ldap and mod_auth_ldap2 Community Modules through 2020-01-27 for Prosody incompletely verify the XMPP address passed to the is_admin() function. This grants remote entities admin-only functionality if their username matches the username of a local admin.

NVD Source

Technical Analysis

CVE-2020-8086 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
prosody2 product(s)
mod auth ldapmod auth ldap2
Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap/mod_auth_ldap.lua
ADVISORYhttps://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap2/mod_auth_ldap2.lua
ADVISORYhttps://prosody.im/security/advisory_20200128/
ADVISORYhttps://seclists.org/bugtraq/2020/Feb/5
ADVISORYhttps://www.debian.org/security/2020/dsa-4612
ADVISORYhttps://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap/mod_auth_ldap.lua
ADVISORYhttps://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap2/mod_auth_ldap2.lua
ADVISORYhttps://prosody.im/security/advisory_20200128/
ADVISORYhttps://seclists.org/bugtraq/2020/Feb/5
ADVISORYhttps://www.debian.org/security/2020/dsa-4612

All References (10)

→
https://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap/mod_auth_ldap.luaThird Party Advisory
→
https://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap2/mod_auth_ldap2.luaThird Party Advisory
→
https://prosody.im/security/advisory_20200128/Vendor Advisory
→
https://seclists.org/bugtraq/2020/Feb/5Mailing List · Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4612Third Party Advisory
→
https://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap/mod_auth_ldap.luaThird Party Advisory
→
https://hg.prosody.im/prosody-modules/log/tip/mod_auth_ldap2/mod_auth_ldap2.luaThird Party Advisory
→
https://prosody.im/security/advisory_20200128/Vendor Advisory
→
https://seclists.org/bugtraq/2020/Feb/5Mailing List · Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4612Third Party Advisory

Quick Facts

CVE IDCVE-2020-8086
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-863
CISA KEVNo
Affected2 vendor(s)
PublishedJan 28, 2020

Related CVEs (CWE-863)

CVE-2026-48321
10.0
CVE-2026-48286
10.0
CVE-2026-48303
10.0
CVE-2026-44330
10.0
CVE-2020-13300
10.0
CVE-2018-18815
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-8086 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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