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CVE-2022-4064

Dalli Meta Protocol request_formatter.rb self.meta_set injection

6.3 MediumFix available

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

1.40%Up 0.4 points since Nov 20, 2022
90%50%10%1%

What each source reports

CVE List Score used 6.3

Dalli Meta Protocol request_formatter.rb self.meta_set injection

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Record
CVE-2022-4064
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 3.0
3.7 LowCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0
2.6 AV:N/AC:H/Au:N/C:N/I:P/A:N
Weakness
CWE-74, CWE-707
Updated
2026-11-02
EUVDEUVD-2022-7217 6.3

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Record
EUVD-2022-7217
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-3xg8-cc8f-9wv2 3.7

Unsanitized input leading to code injection in Dalli

A vulnerability was found in Dalli. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation leads to injection. The exploit has been disclosed to the public and may be used. The name of the patch is 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to apply a patch to fix this issue.

Record
GHSA-3xg8-cc8f-9wv2
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-74
Updated
2026-11-02
NVD 6.3

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Record
CVE-2022-4064
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS 2.0
2.6 LowAV:N/AC:H/Au:N/C:N/I:P/A:N
Weakness
CWE-74, CWE-707
Updated
2026-11-02
OSV 6.3

Dalli Meta Protocol request_formatter.rb self.meta_set injection

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Record
CVE-2022-4064
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-707, CWE-74
Updated
2026-11-02
OSVGHSA-3xg8-cc8f-9wv2 3.7

Unsanitized input leading to code injection in Dalli

A vulnerability was found in Dalli. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation leads to injection. The exploit has been disclosed to the public and may be used. The name of the patch is 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to apply a patch to fix this issue.

Record
GHSA-3xg8-cc8f-9wv2
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-74
Updated
2026-11-02
OSVOESA-2023-1002 3.7

rubygem-dalli security update

High performance memcached client for Ruby

Security Fix(es):

A vulnerability was found in Dalli. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation leads to injection. The exploit has been disclosed to the public and may be used. The name of the patch is 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to apply a patch to fix this issue. VDB-214026 is the identifier assigned to this vulnerability.(CVE-2022-4064)

Record
OESA-2023-1002
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2022-4064 6.3

A vulnerability was found in Dalli up to 3.2.2. It has been classified as problematic. Affected is the function self.meta_set of the file lib/dalli/protocol/meta/request_formatter.rb of the component Meta Protocol Handler. The manipulation of the argument cas/ttl leads to injection. It is possible to launch the attack remotely. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed to the public and may be used. Upgrading to version 3.2.3 is able to address this issue. The patch is identified as 48d594dae55934476fec61789e7a7c3700e0f50d. It is recommended to upgrade the affected component.

Record
UBUNTU-CVE-2022-4064
CVSS 4.0
6.3 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
3.7 LowCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
dalli
RubyGems
 before 3.2.3
3.2.3
dalli
RubyGems
 before 3.2.3, plus listed versions
0.10.00.10.10.11.00.11.10.11.2
Show 45 moreShow less
0.9.00.9.10.9.100.9.20.9.30.9.40.9.50.9.60.9.70.9.80.9.91.0.01.0.11.0.21.0.31.0.41.0.51.1.11.1.21.1.31.1.41.1.52.0.02.0.12.0.22.0.32.0.42.0.52.1.02.2.02.2.12.3.02.5.02.6.02.6.12.6.22.6.32.6.42.7.02.7.12.7.102.7.112.7.22.7.32.7.4
3.2.3
rubygem-dalli
openEuler:22.03-LTS-SP1
 before 3.2.2-2.oe2203sp1
3.2.2-2.oe2203sp1
ruby-dalli
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.7.4-1
 None known
ruby-dalli
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.7.4-1
 None known
ruby-dalli
Ubuntu:20.04:LTS
 All versions, plus listed versions
2.7.9-12.7.9-2
 None known
ruby-dalli
Ubuntu:22.04:LTS
 All versions, plus listed versions
2.7.11-13.0.6-1
 None known
ruby-dalli
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.0.6-1.13.0.6-2
 None known
ruby-dalli
Ubuntu:25.10
 All versions, plus listed versions
3.2.8-13.2.8-2
 None known
ruby-dalli
Ubuntu:26.10
 All versions, plus listed versions
3.2.8-25.0.5-15.0.6-1
 None known
ruby-dalli
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.2.8-2
 None known

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-2022-4064 is a medium vulnerability (CVSS 6.3) in Dalli Project Dalli, published November 19, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.40%, the 72nd percentile. Fixed in dalli 3.2.3.

References

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Left out here: 22 versions. The JSON record has them.

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