CVE-2020-9495
Injection in Apache Archiva
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
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
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
CVE-2020-9495- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
CVE List No score
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
CVE-2020-9495- Updated
- 2026-11-02
EUVDEUVD-2022-1193 No score
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
EUVD-2022-1193- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v83p-xwm9-v4g8
Injection in Apache Archiva
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
GHSA-v83p-xwm9-v4g8- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
OSV
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
CVE-2020-9495- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-v83p-xwm9-v4g8
Injection in Apache Archiva
Apache Archiva login service before 2.2.5 is vulnerable to LDAP injection. A attacker is able to retrieve user attribute data from the connected LDAP server by providing special values to the login form. With certain characters it is possible to modify the LDAP filter used to query the LDAP users. By measuring the response time for the login request, arbitrary attribute data can be retrieved from LDAP user objects.
- Record
GHSA-v83p-xwm9-v4g8- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-74
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.archiva:archivaMaven |
before 2.2.5 | 2.2.5 |
org.apache.archiva:archivaMaven |
before 2.2.5, plus listed versions 1.11.1.11.1.21.1.31.1.4 Show 25 moreShow less1.21.2-M11.2.11.2.21.31.3.11.3.21.3.31.3.41.3.51.3.61.3.81.3.91.4-M11.4-M21.4-M31.4-M42.0.02.0.12.1.02.1.12.2.02.2.12.2.32.2.4 |
2.2.5 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | ggolawski/CVE-2020-9495 | 2020-07-29 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-9495 is a medium vulnerability (CVSS 5.3) in Apache Archiva, published June 19, 2020. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 8.07%, the 94th percentile. Fixed in org.apache.archiva:archiva 2.2.5.
References
archiva.apache.org/security.html
lists.apache.org/thread.html/r7ae580f700ade57b00641a70a5c639a3ba576893bbf7f9fd93bc491d%40%3Cusers.maven.apache.org%3E
openwall.com/lists/oss-security/2020/06/19/1
Show 6 moreShow less
nvd.nist.gov/vuln/detail/CVE-2020-9495
github.com/advisories/GHSA-v83p-xwm9-v4g8