CVE-2021-22097
Deserialization of Untrusted Data in Spring AMQP
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
CVE-2021-22097- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 6.8 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:C - Weakness
- CWE-502
- Updated
- 2026-11-02
CVE List No score
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
CVE-2021-22097- Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2022-3851 No score
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
EUVD-2022-3851- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-fx7f-rjqj-52pj
Deserialization of Untrusted Data in Spring AMQP
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
GHSA-fx7f-rjqj-52pj- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
CVE-2021-22097- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVGHSA-fx7f-rjqj-52pj
Deserialization of Untrusted Data in Spring AMQP
In Spring AMQP versions 2.2.0 - 2.2.18 and 2.3.0 - 2.3.10, the Spring AMQP Message object, in its toString() method, will deserialize a body for a message with content type application/x-java-serialized-object. It is possible to construct a malicious java.util.Dictionary object that can cause 100% CPU usage in the application if the toString() method is called.
- Record
GHSA-fx7f-rjqj-52pj- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Show 6 moreShow less
OSVCLSA-2026-1785380226 No score
TuxCare security update for org.springframework.amqp:spring-amqp (2 CVEs)
TuxCare rebuilt org.springframework.amqp:spring-amqp to address 2 CVEs. Fixed in 2.1.8.RELEASE-tuxcare.1.
- Record
CLSA-2026-1785380226- Updated
- 2026-11-02
OSVCLSA-2026-1789453747 No score
TuxCare security update for org.springframework.amqp:spring-amqp (1 CVE)
TuxCare rebuilt org.springframework.amqp:spring-amqp to address 1 CVE. Fixed in 2.3.7-tuxcare.1.
- Record
CLSA-2026-1789453747- Updated
- 2026-11-02
OSVCLSA-2026-1792077747 No score
TuxCare security update for org.springframework.amqp (4 CVEs)
TuxCare rebuilt 2 org.springframework.amqp packages to address 4 CVEs. Fixed in 2.3.10-tuxcare.1.
- Record
CLSA-2026-1792077747- Updated
- 2026-11-02
OSVCLSA-2026-1792077762 No score
TuxCare security update for org.springframework.amqp (4 CVEs)
TuxCare rebuilt 2 org.springframework.amqp packages to address 4 CVEs. Fixed in 2.3.6-tuxcare.1.
- Record
CLSA-2026-1792077762- Updated
- 2026-11-02
OSVCLSA-2026-1793717727 No score
TuxCare security update for org.springframework.amqp:spring-amqp (1 CVE)
TuxCare rebuilt org.springframework.amqp:spring-amqp to address 1 CVE. Fixed in 2.2.12.RELEASE-tuxcare.3.
- Record
CLSA-2026-1793717727- Updated
- 2026-11-03
OSVCLSA-2026-1793958058 No score
TuxCare security update for org.springframework.amqp:spring-amqp (1 CVE)
TuxCare rebuilt org.springframework.amqp:spring-amqp to address 1 CVE. Fixed in 1.7.14.RELEASE-tuxcare.2.
- Record
CLSA-2026-1793958058- Updated
- 2026-11-06
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.springframework.amqp:spring-amqpMaven |
2.2.0 to 2.2.18 | 2.2.19 |
org.springframework.amqp:spring-amqpMaven |
2.3.0 to 2.3.10 | 2.3.11 |
org.springframework.amqp:spring-amqpTuxCare:Maven From an advisory covering 2 CVEs |
2.1.8.RELEASE up to 2.1.8.RELEASE-tuxcare.1 | 2.1.8.RELEASE-tuxcare.1 |
org.springframework.amqp:spring-amqpTuxCare:Maven |
2.3.7 up to 2.3.7-tuxcare.1 | 2.3.7-tuxcare.1 |
org.springframework.amqp:spring-amqpTuxCare:Maven From an advisory covering 4 CVEs |
2.3.10 up to 2.3.10-tuxcare.1 | 2.3.10-tuxcare.1 |
org.springframework.amqp:spring-rabbitTuxCare:Maven From an advisory covering 4 CVEs |
2.3.10 up to 2.3.10-tuxcare.1 | 2.3.10-tuxcare.1 |
org.springframework.amqp:spring-amqpTuxCare:Maven From an advisory covering 4 CVEs |
2.3.6 up to 2.3.6-tuxcare.1 | 2.3.6-tuxcare.1 |
org.springframework.amqp:spring-rabbitTuxCare:Maven From an advisory covering 4 CVEs |
2.3.6 up to 2.3.6-tuxcare.1 | 2.3.6-tuxcare.1 |
org.springframework.amqp:spring-amqpTuxCare:Maven |
2.2.12.RELEASE up to 2.2.12.RELEASE-tuxcare.3, plus listed versions 2.2.12.RELEASE-tuxcare.12.2.12.RELEASE-tuxcare.2 |
2.2.12.RELEASE-tuxcare.3 |
org.springframework.amqp:spring-amqpTuxCare:Maven |
1.7.14.RELEASE up to 1.7.14.RELEASE-tuxcare.2, plus listed versions 1.7.14.RELEASE-tuxcare.1 |
1.7.14.RELEASE-tuxcare.2 |
org.springframework.amqp:spring-amqpMaven |
2.2.0 up to 2.2.19, plus listed versions 2.2.0.RELEASE2.2.1.RELEASE2.2.10.RELEASE2.2.11.RELEASE2.2.12.RELEASE Show 14 moreShow less2.2.13.RELEASE2.2.14.RELEASE2.2.15.RELEASE2.2.16.RELEASE2.2.17.RELEASE2.2.18.RELEASE2.2.2.RELEASE2.2.3.RELEASE2.2.4.RELEASE2.2.5.RELEASE2.2.6.RELEASE2.2.7.RELEASE2.2.8.RELEASE2.2.9.RELEASE |
2.2.19 |
org.springframework.amqp:spring-amqpMaven |
2.3.0 up to 2.3.11, plus listed versions 2.3.12.3.102.3.22.3.32.3.4 Show 5 moreShow less2.3.52.3.62.3.72.3.82.3.9 |
2.3.11 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, aliases | OSV | |
| affected | ||
| affected, aliases, facts | OSV | |
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-22097 is a medium vulnerability (CVSS 6.5) in Spring Amqp, published October 28, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.07%, the 65th percentile. Fixed in org.springframework.amqp:spring-amqp 2.2.19.