CVE-2026-28678
JWTs in cookies lack payload protection; auth risk.
Is CVE-2026-28678 being exploited?
Not confirmed. CVE-2026-28678 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.
How severe is CVE-2026-28678?
CVE-2026-28678 is rated High with a CVSS score of 8.1. 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-2026-28678?
Yes. A fix has been recorded for CVE-2026-28678. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28678 affect?
CVE-2026-28678 affects DSA Study Hub web app. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28678?
Patch now; enforce HttpOnly/Secure cookies and stronger JWT handling.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unprotected JWT payloads in cookies may allow session hijack or auth bypass if tokens are exposed.
Patch when possible