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CVE-2022-31011

TiDB authentication bypass vulnerability

7.8 HighFix available

TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability. TiDB version 5.3.1 contains a patch for this issue. Other mitigation strategies include turning off Security Enhanced Mode (SEM), disabling local login for non-root accounts, and ensuring that the same IP cannot be logged in as root and normal user at the same time.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.32%Down 0.6 points since Jun 1, 2022
90%50%10%1%

What each source reports

CVE List Score used 7.8

TiDB authentication bypass vulnerability

TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability. TiDB version 5.3.1 contains a patch for this issue. Other mitigation strategies include turning off Security Enhanced Mode (SEM), disabling local login for non-root accounts, and ensuring that the same IP cannot be logged in as root and normal user at the same time.

Record
CVE-2022-31011
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
EUVDEUVD-2022-5925 7.8

TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability. TiDB version 5.3.1 contains a patch for this issue. Other mitigation strategies include turning off Security Enhanced Mode (SEM), disabling local login for non-root accounts, and ensuring that the same IP cannot be logged in as root and normal user at the same time.

Record
EUVD-2022-5925
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
GitHub AdvisoriesGHSA-4whx-7p29-mq22 7.8

TiDB authentication bypass vulnerability

Impact

Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability.

Patches

Please upgrade to TiDB 5.3.1 or higher version

Workarounds

You can also mitigate risks by taking the following measures. Option 1: Turn off SEM (Security Enhanced Mode). Option 2: Disable local login for non-root accounts and ensure that the same IP cannot be logged in as root or normal user at the same time.

References

https://en.pingcap.com/download/

For more information

If you have any questions or comments about this advisory:

Record
GHSA-4whx-7p29-mq22
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
NVD 7.8

TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability. TiDB version 5.3.1 contains a patch for this issue. Other mitigation strategies include turning off Security Enhanced Mode (SEM), disabling local login for non-root accounts, and ensuring that the same IP cannot be logged in as root and normal user at the same time.

Record
CVE-2022-31011
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
4.6 MediumAV:L/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-287
Updated
2026-11-02
OSV 7.8

TiDB authentication bypass vulnerability

TiDB is an open-source NewSQL database that supports Hybrid Transactional and Analytical Processing (HTAP) workloads. Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability. TiDB version 5.3.1 contains a patch for this issue. Other mitigation strategies include turning off Security Enhanced Mode (SEM), disabling local login for non-root accounts, and ensuring that the same IP cannot be logged in as root and normal user at the same time.

Record
CVE-2022-31011
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02
OSVGHSA-4whx-7p29-mq22 7.8

TiDB authentication bypass vulnerability

Impact

Under certain conditions, an attacker can construct malicious authentication requests to bypass the authentication process, resulting in privilege escalation or unauthorized access. Only users using TiDB 5.3.0 are affected by this vulnerability.

Patches

Please upgrade to TiDB 5.3.1 or higher version

Workarounds

You can also mitigate risks by taking the following measures. Option 1: Turn off SEM (Security Enhanced Mode). Option 2: Disable local login for non-root accounts and ensure that the same IP cannot be logged in as root or normal user at the same time.

References

https://en.pingcap.com/download/

For more information

If you have any questions or comments about this advisory:

Record
GHSA-4whx-7p29-mq22
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-287
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/pingcap/tidb
Go
5.3.0 to 5.3.0
5.3.1
github.com/pingcap/tidb
Go
0.0.0-20210808221113-a7fdc2a05663 up to 0.0.0-20220221072141-27ffd1126da1
0.0.0-20220221072141-27ffd1126da1
github.com/pingcap/tidb
Go
1.1.0-beta.0.20210808221113-a7fdc2a05663 up to 1.1.0-beta.0.20220221072141-27ffd1126da1
1.1.0-beta.0.20220221072141-27ffd1126da1
github.com/pingcap/tidb
Go
5.3.0 up to 5.3.1
5.3.1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-31011 is a high vulnerability (CVSS 7.8) in Pingcap Tidb, published May 31, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.32%, the 25th percentile. Fixed in github.com/pingcap/tidb 5.3.1.

References

MoveEnter Open