How severe is CVE-2021-22098?

CVE-2021-22098 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-22098 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22098?

CVE-2021-22098 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22098?

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

When was CVE-2021-22098 published?

CVE-2021-22098 was published on 2021-08-11 and last updated on 2026-06-17.

CVE-2021-22098

CVE-2021-22098 is a medium-severity vulnerability in Cloudfoundry Cf-deployment with a CVSS 3.x base score of 6.1. 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-601.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 5.8
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-601
Affected product: Cloudfoundry Cf-deployment
Published: 2021-08-11
Last modified: 2026-06-17

Description

UAA server versions prior to 75.4.0 are vulnerable to an open redirect vulnerability. A malicious user can exploit the open redirect vulnerability by social engineering leading to take over of victims’ accounts in certain cases along with redirection of UAA users to a malicious sites.

Frequently asked questions

What is CVE-2021-22098?: UAA server versions prior to 75.4.0 are vulnerable to an open redirect vulnerability. A malicious user can exploit the open redirect vulnerability by social engineering leading to take over of victims’ accounts in certain cases along with redirection of UAA users to a malicious sites.
How severe is CVE-2021-22098?: CVE-2021-22098 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-22098 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22098?: CVE-2021-22098 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22098?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22098 published?: CVE-2021-22098 was published on 2021-08-11 and last updated on 2026-06-17.

References

https://www.cloudfoundry.org/blog/cve-2021-22098-open-redirect-vulnerability-in-uaa-server/

Affected products (2)

cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:user_account_and_authentication:*:*:*:*:*:*:*:*

More vulnerabilities in Cloudfoundry Cf-deployment

CVE-2019-3801 — Critical (CVSS 9.8): Cloud Foundry cf-deployment, versions prior to 7.9.0, contain java components that are using an insecure protocol to…
CVE-2022-31733 — Critical (CVSS 9.1): Starting with diego-release 2.55.0 and up to 2.69.0, and starting with CF Deployment 17.1 and up to 23.2.0, apps are…
CVE-2020-5417 — High (CVSS 8.8): Cloud Foundry CAPI (Cloud Controller), versions prior to 1.97.0, when used in a deployment where an app domain is also…
CVE-2020-5402 — High (CVSS 8.8): In Cloud Foundry UAA, versions prior to 74.14.0, a CSRF vulnerability exists due to the OAuth2 state parameter not…
CVE-2019-11283 — High (CVSS 8.8): Cloud Foundry SMB Volume, versions prior to v2.0.3, accidentally outputs sensitive information to the logs. A remote…
CVE-2018-1191 — High (CVSS 8.8): Cloud Foundry Garden-runC, versions prior to 1.11.0, contains an information exposure vulnerability. A user with access…

All CVEs affecting Cloudfoundry Cf-deployment →

Other CWE-601 (Open Redirect) vulnerabilities

CVE-2018-3774 — Critical (CVSS 10.0): Incorrect parsing in url-parse <1.4.3 returns wrong hostname which leads to multiple vulnerabilities such as SSRF, Open…
CVE-2019-25282 — Critical (CVSS 9.8): V-SOL GPON/EPON OLT Platform v2.03 contains an open redirect vulnerability in the script that allows attackers to…
CVE-2020-36912 — Critical (CVSS 9.8): Plexus anblick Digital Signage Management 3.1.13 contains an open redirect vulnerability in the 'PantallaLogin' script…
CVE-2025-43526 — Critical (CVSS 9.8): This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac…
CVE-2025-55031 — Critical (CVSS 9.8): Malicious pages could use Firefox for iOS to pass FIDO: links to the OS and trigger the hybrid passkey transport. An…
CVE-2024-22891 — Critical (CVSS 9.8): Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link.

Browse all CWE-601 (Open Redirect) vulnerabilities →