CVE-2026-80515
Auth bypass via percent-encoding allows admin takeover of Arrowhead management APIs.
Is CVE-2026-80515 being exploited?
Not confirmed. CVE-2026-80515 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2026-80515?
CVE-2026-80515 is rated High with a CVSS score of 8.9. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-80515?
Yes. A fix has been recorded for CVE-2026-80515. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-80515 affect?
CVE-2026-80515 affects Eclipse Arrowhead 5.0.0 - 5.2.1, arrowhead-common (spring-boot), Tomcat + Spring MVC deployments using Arrowhead. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-80515?
Upgrade Arrowhead to a patched release (>5.2.1) or apply vendor mitigation; block percent-encoded mgmt paths.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can bypass mgmt auth using percent-encoded paths to create sysop accounts and obtain full administrative control of the local cloud.
Immediate action required
- affected>= 5.0.0 and <= 5.2.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.