How severe is CVE-2022-4064?

CVE-2022-4064 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2022-4064 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-4064?

CVE-2022-4064 affects Dalli Project Dalli. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-4064?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-4064 published?

CVE-2022-4064 was published on 2022-11-19 and last updated on 2026-06-17.

CVE-2022-4064

CVE-2022-4064 is a low-severity vulnerability in Dalli Project Dalli with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
CVSS v2: 2.6
CVSS v4: 6.3
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Dalli Project Dalli
Published: 2022-11-19
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-4064?: 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.
How severe is CVE-2022-4064?: CVE-2022-4064 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2022-4064 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-4064?: CVE-2022-4064 affects Dalli Project Dalli. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-4064?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-4064 published?: CVE-2022-4064 was published on 2022-11-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:dalli_project:dalli:*:*:*:*:*:ruby:*:*

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