Security readout for executives and security teams
Plain-English summary
CVE-2021-22098 is an open redirect issue in UAA server before version 75.4.0. A malicious actor could trick users into following a trusted-looking UAA link that sends them to a malicious site, with account takeover possible in certain cases.
Executive priority
Treat this as a timely identity-system fix, not an emergency unless exposed UAA systems are outdated and public-facing. The business risk is phishing-assisted account compromise.
Technical view
The issue is classified as CWE-601. Affected Cloud Foundry UAA server versions prior to 75.4.0 can redirect users to attacker-controlled destinations. The provided sources do not include CVSS scoring, detailed exploit conditions, or proof of active exploitation.
Likely exposure
Organizations using Cloud Foundry UAA server before 75.4.0 are potentially exposed, especially where UAA handles user authentication or account workflows reachable by end users.
Exploitation context
The source describes exploitation through social engineering and redirection to malicious sites. CISA KEV is false in the bundle, and no cited source states active exploitation.
Researcher notes
Evidence is limited to the CVE record and Cloud Foundry advisory reference. The bundle identifies affected versions and impact class, but not CVSS, affected configurations, patch details beyond 75.4.0, or exploitation in the wild.
Mitigation direction
- Upgrade Cloud Foundry UAA server to version 75.4.0 or later.
- Review Cloud Foundry vendor guidance for any additional configuration recommendations.
- Prioritize systems where UAA is internet-facing or used for privileged access.
- Warn users about unexpected authentication links until remediation is complete.
Validation and detection
- Inventory all UAA server deployments and record their versions.
- Confirm no production UAA server is running below version 75.4.0.
- Review authentication flows for unexpected external redirect destinations.
- Check logs for suspicious redirect patterns or unusual account activity.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-601: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-22098 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://www.cloudfoundry.org/blog/cve-2021-22098-open-redirect-vulnerability-in-uaa-server/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
URL Redirection to Untrusted Site ('Open Redirect')
URL Redirection to Untrusted Site ('Open Redirect') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.