Security readout for executives and security teams
Plain-English summary
ZenML’s login and self-service password-change protections can be evaded in affected deployments by falsifying a client-address header. This may enable sustained credential guessing, increasing the risk of account compromise without disrupting service.
Executive priority
Prioritize remediation for externally reachable ZenML deployments using the vulnerable proxy configuration. Treat evidence of concentrated authentication failures or unusual forwarded-address rotation as grounds for accelerated credential review and incident investigation.
Technical view
ZenML versions 0.57.0 through 0.94.2 can derive the rate-limit key from attacker-controlled X-Forwarded-For data when Uvicorn trusts proxy headers from all sources. Rotating that header changes request.client.host and creates new rate-limit buckets for POST /api/v1/login and self password-change endpoints.
Likely exposure
Exposure requires an affected ZenML version and Uvicorn configured with proxy headers enabled while allowing forwarded headers from all IPs. Internet-accessible or otherwise untrusted-client-accessible authentication endpoints face the greatest risk.
Exploitation context
The bypass is remotely reachable, low complexity, requires no user interaction, and can support unthrottled credential guessing. The bundle does not establish active exploitation, and the CVE is not listed as KEV.
Researcher notes
The flaw is a trust-boundary failure classified as CWE-290. Rate limiting depends on request.client.host, but the described Uvicorn configuration permits clients to influence that value. CVSS 3.0 is 6.5; confidentiality and integrity impacts are rated low, with no availability impact. The bundle identifies a correcting commit but no explicit fixed release.
Mitigation direction
- Upgrade to a vendor-confirmed fixed ZenML release incorporating the referenced correction.
- Restrict which trusted proxies may supply forwarded headers; avoid trusting forwarded headers from every IP.
- Add independent authentication throttling or edge protections while remediation is pending.
- Review vendor guidance before changing production proxy behavior.
Validation and detection
- Inventory ZenML installations and identify versions between 0.57.0 and 0.94.2 inclusive.
- Review Uvicorn startup configuration for proxy headers and unrestricted forwarded-allow IPs.
- Confirm untrusted clients cannot directly influence the application’s derived client address.
- Examine authentication logs for repeated failures accompanied by changing X-Forwarded-For values.
- Verify the referenced correction exists after upgrading, using vendor release information.
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-290: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCredential and access behavior lookup
The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2026-11922 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
- Medium
- CVSS
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N3.92.5@huntr_aiVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://huntr.com/bounties/3cb8bf6a-ae55-4b38-8da3-601c666a210eCVE reference, @huntr_ai
- https://github.com/zenml-io/zenml/commit/8a2214bdd63eb8200ce4719d82c6f0d935e922d1CVE reference, @huntr_ai
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.
Authentication Bypass by Spoofing
Authentication Bypass by Spoofing represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.