CVE-2020-8086
The mod_auth_ldap and mod_auth_ldap2 Community Modules through 2020-01-27 for Prosody...
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2020-8086- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:P - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE ListNo score
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.
- Record
CVE-2020-8086- Updated
- 2026-11-02
EUVDEUVD-2020-28998No score
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.
- Record
EUVD-2020-28998- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-hq2x-6q7v-jx98No score
The mod_auth_ldap and mod_auth_ldap2 Community Modules through 2020-01-27 for Prosody...
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.
- Record
GHSA-hq2x-6q7v-jx98- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2020-8086- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2020-8086
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.
- Record
DEBIAN-CVE-2020-8086- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2020-8086
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.
- Record
UBUNTU-CVE-2020-8086- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-12
OSVUSN-9056-1No score
prosody-modules vulnerability
It was discovered that the LDAP authentication modules in Prosody Community Modules did not fully verify XMPP addresses when checking for administrator privileges. A remote attacker could possibly use this issue to gain administrator privileges.
- Record
USN-9056-1- Updated
- 2026-11-12
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
prosody-modulesDebian:12 | before 0.0~hg20200128.09e7e880e056+dfsg-1 | 0.0~hg20200128.09e7e880e056+dfsg-1 |
prosody-modulesDebian:13 | before 0.0~hg20200128.09e7e880e056+dfsg-1 | 0.0~hg20200128.09e7e880e056+dfsg-1 |
prosody-modulesDebian:14 | before 0.0~hg20200128.09e7e880e056+dfsg-1 | 0.0~hg20200128.09e7e880e056+dfsg-1 |
prosody-modulesDebian:9 | before 0.0~hg20170123.3ed504b944e5+dfsg-1+deb9u1, plus listed versions 0.0~hg20170123.3ed504b944e5+dfsg-1 | 0.0~hg20170123.3ed504b944e5+dfsg-1+deb9u1 |
prosody-modulesDebian:10 | before 0.0~hg20190203.b54e98d5c4a1+dfsg-1+deb10u1, plus listed versions 0.0~hg20190203.b54e98d5c4a1+dfsg-1 | 0.0~hg20190203.b54e98d5c4a1+dfsg-1+deb10u1 |
prosody-modulesUbuntu:Pro:16.04:LTS | before 0.0~hg20150813.12ac88940fe3-2ubuntu0.1~esm1, plus listed versions 0.0~hg20150813.12ac88940fe3-2 | 0.0~hg20150813.12ac88940fe3-2ubuntu0.1~esm1 |
prosody-modulesUbuntu:Pro:18.04:LTS | before 0.0~hg20170929.c53cc1ae4788+dfsg-3ubuntu0.1~esm1, plus listed versions 0.0~hg20170123.3ed504b944e5+dfsg-10.0~hg20170929.c53cc1ae4788+dfsg-20.0~hg20170929.c53cc1ae4788+dfsg-3 | 0.0~hg20170929.c53cc1ae4788+dfsg-3ubuntu0.1~esm1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases, references | OSV | |
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-8086 is a critical vulnerability (CVSS 9.8) in Debian Linux, published January 28, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.56%, the 75th percentile. Fixed in prosody-modules 0.0~hg20200128.09e7e880e056+dfsg-1.