CVE-2026-82287
Rybbit CORS misconfig allows credentialed cross-origin data access
Is CVE-2026-82287 being exploited?
Not confirmed. CVE-2026-82287 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 0.28% probability of exploitation in the next 30 days.
How severe is CVE-2026-82287?
CVE-2026-82287 is rated High with a CVSS score of 8.6. 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-2026-82287?
Yes. A fix has been recorded for CVE-2026-82287. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-82287 affect?
CVE-2026-82287 affects Rybbit <2.7.0, self-hosted Rybbit servers, applications embedding Rybbit. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82287?
Upgrade to Rybbit >=2.7.0 or disable CORS credentials until patched
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker can make credentialed cross-origin requests to read analytics/account data and perform authenticated state-changing actions as the victim user.
Immediate action required
- affected< 2.7.0
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.