CVE-2020-8920
Overoptimization leads to private information leak in Gerrit
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Overoptimization leads to private information leak in Gerrit
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
- Record
CVE-2020-8920- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-285
- Updated
- 2026-11-02
EUVDEUVD-2022-3896
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
- Record
EUVD-2022-3896- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-g5q2-cxgq-h2rw No score
Information leak in Gerrit
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
- Record
GHSA-g5q2-cxgq-h2rw- Weakness
- CWE-863
- Updated
- 2026-11-02
NVD
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
- Record
CVE-2020-8920- CVSS 3.1
- 3.5 Low
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 2.7 Low
AV:A/AC:L/Au:S/C:P/I:N/A:N - Weakness
- CWE-285
- Updated
- 2026-11-02
OSVGHSA-g5q2-cxgq-h2rw No score
Information leak in Gerrit
An information leak vulnerability exists in Gerrit versions prior to 2.14.22, 2.15.21, 2.16.25, 3.0.15, 3.1.10, 3.2.5 where an overoptimization with the FilteredRepository wrapper skips the verification of access on All-Users repositories, allowing an attacker to get read access to all users' personal information associated with their accounts.
- Record
GHSA-g5q2-cxgq-h2rw- Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
com.google.gerrit:gerrit-plugin-apiMaven |
before 2.14.22 | 2.14.22 |
com.google.gerrit:gerrit-plugin-apiMaven |
2.15.0 up to 2.15.21 | 2.15.21 |
com.google.gerrit:gerrit-plugin-apiMaven |
2.16.0 up to 2.16.25 | 2.16.25 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.0.0 up to 3.0.15 | 3.0.15 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.1.0 up to 3.1.10 | 3.1.10 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.2.0 up to 3.2.5 | 3.2.5 |
com.google.gerrit:gerrit-plugin-apiMaven |
before 2.14.22, plus listed versions 2.102.10-rc12.10-rc22.10.12.10.2 Show 45 moreShow less2.10.32.10.3.12.10.42.10.52.10.62.10.72.10.82.112.11.12.11.102.11.112.11.122.11.22.11.32.11.42.11.52.11.62.11.72.11.82.11.92.122.12-rc02.12.12.12.22.12.32.12.42.12.52.12.62.12.72.12.82.12.92.132.13-rc12.13.12.13.102.13.112.13.122.13.132.13.142.13.22.13.32.13.42.13.52.13.62.13.7 |
2.14.22 |
com.google.gerrit:gerrit-plugin-apiMaven |
2.15.0 up to 2.15.21, plus listed versions 2.152.15.12.15.102.15.112.15.12 Show 16 moreShow less2.15.132.15.142.15.152.15.162.15.172.15.182.15.192.15.22.15.202.15.32.15.42.15.52.15.62.15.72.15.82.15.9 |
2.15.21 |
com.google.gerrit:gerrit-plugin-apiMaven |
2.16.0 up to 2.16.25, plus listed versions 2.162.16.12.16.102.16.11.12.16.12 Show 20 moreShow less2.16.132.16.142.16.152.16.162.16.172.16.182.16.192.16.22.16.202.16.212.16.222.16.232.16.242.16.32.16.42.16.52.16.62.16.72.16.82.16.9 |
2.16.25 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.0.0 up to 3.0.15, plus listed versions 3.0.13.0.103.0.113.0.123.0.13 Show 9 moreShow less3.0.143.0.23.0.33.0.43.0.53.0.63.0.73.0.83.0.9 |
3.0.15 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.1.0 up to 3.1.10, plus listed versions 3.1.13.1.23.1.33.1.43.1.5 Show 4 moreShow less3.1.63.1.73.1.83.1.9 |
3.1.10 |
com.google.gerrit:gerrit-plugin-apiMaven |
3.2.0 up to 3.2.5, plus listed versions 3.2.13.2.23.2.33.2.4 |
3.2.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2020-8920 is a low vulnerability (CVSS 3.5) in Gerrit, published December 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.37%, the 31st percentile. Fixed in com.google.gerrit:gerrit-plugin-api 2.14.22.
References
Left out here: 33 versions. The JSON record has them.