How severe is CVE-2022-39222?

CVE-2022-39222 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2022-39222 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-39222?

CVE-2022-39222 affects Linuxfoundation Dex. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-39222?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2022-39222 published?

CVE-2022-39222 was published on 2022-10-06 and last updated on 2026-06-17.

CVE-2022-39222

CVE-2022-39222 is a critical-severity vulnerability in Linuxfoundation Dex with a CVSS 3.x base score of 9.3. 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-862.

Key facts

Severity: Critical (CVSS 3.x base score 9.3)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Linuxfoundation Dex
Published: 2022-10-06
Last modified: 2026-06-17

Description

Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex instances with public clients (and by extension, clients accepting tokens issued by those Dex instances) are affected by this vulnerability if they are running a version prior to 2.35.0. An attacker can exploit this vulnerability by making a victim navigate to a malicious website and guiding them through the OIDC flow, stealing the OAuth authorization code in the process. The authorization code then can be exchanged by the attacker for a token, gaining access to applications accepting that token. Version 2.35.0 has introduced a fix for this issue. Users are advised to upgrade. There are no known workarounds for this issue.

Frequently asked questions

What is CVE-2022-39222?: Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex instances with public clients (and by extension, clients accepting tokens issued by those Dex instances) are affected by this vulnerability if they are running a version prior to 2.35.0. An attacker can exploit this vulnerability by making a victim navigate to a malicious website and guiding them through the OIDC flow, stealing the OAuth authorization code in the process. The authorization code then can be exchanged by the attacker for a token, gaining access to applications accepting that token. Version 2.35.0 has introduced a fix for this issue. Users are advised to upgrade. There are no known workarounds for this issue.
How severe is CVE-2022-39222?: CVE-2022-39222 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2022-39222 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-39222?: CVE-2022-39222 affects Linuxfoundation Dex. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-39222?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2022-39222 published?: CVE-2022-39222 was published on 2022-10-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*

More vulnerabilities in Linuxfoundation Dex

CVE-2020-27847 — Critical (CVSS 9.8): A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature…
CVE-2020-26290 — Critical (CVSS 9.3): Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of…
CVE-2024-23656 — High (CVSS 7.5): Dex is an identity service that uses OpenID Connect to drive authentication for other apps. Dex 2.37.0 serves HTTPS…

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