CVE-2026-121821
Last modified
CVE-2026-121821 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A vulnerability has been identified in armeria versions 0.84.0 through 1.42.0, where any-origin CORS policies do not enforce configured path restrictions, allowing an attacker-controlled website visited by an authenticated victim to read sensitive responses from excluded paths when credentials are enabled and the victim's browser sends authentication credentials..
Description
A vulnerability has been identified in armeria versions 0.84.0 through 1.42.0, where any-origin CORS policies do not enforce configured path restrictions, allowing an attacker-controlled website visited by an authenticated victim to read sensitive responses from excluded paths when credentials are enabled and the victim's browser sends authentication credentials.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| LY Corporation | Armeria | >= 0.84.0, < 1.43.0 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-121821?
How severe is CVE-2026-121821?
How do I fix CVE-2026-121821?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-121803Rejected reason: This CVE ID is a duplicate of CVE-2026-8033…
- CVE-2026-121816Herowatch Mini developed by About Time Technologies has a Mi…8.8
- CVE-2026-121817Herowatch Go Server developed by About Time Technologies has…7.5
- CVE-2026-121818Herowatch Mini developed by About Time Technologies has a sy…7.8
- CVE-2026-121819A vulnerability has been identified in armeria-xds versions …5.9
- CVE-2026-121820A vulnerability has been identified in armeria-saml versions…8.7
- CVE-2026-121822A vulnerability has been identified in armeria versions 0.80…2.4
- CVE-2026-121823A vulnerability has been identified in armeria versions prio…8.7
- CVE-2026-121824A vulnerability has been identified in armeria versions prio…8.7
- CVE-2026-12183Nefteprodukttekhnika BUK TS-G Gas Station Automation System …9.8
- CVE-2026-121837A flaw was found in the REST Data Panache component of Quark…4.3
- CVE-2026-12185In Bouncy Castle for Java before 1.85, BKS/UBER keystore all…8.6
Are you affected by CVE-2026-121821?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST