CVE-2026-75833
Open redirect in Grav API plugin allows post-login redirect to attacker site.
Is CVE-2026-75833 being exploited?
Not confirmed. CVE-2026-75833 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 0.19% probability of exploitation in the next 30 days.
How severe is CVE-2026-75833?
CVE-2026-75833 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-2026-75833?
Yes. A fix has been recorded for CVE-2026-75833. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-75833 affect?
CVE-2026-75833 affects getgrav/grav-plugin-api (<1.0.14), Grav 2.0 admin-next/API stack. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-75833?
Upgrade to >=1.0.14 and enforce server-side returnTo validation/whitelisting.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated users can be redirected to attacker-controlled sites after OAuth login, enabling post-login phishing and potential credential theft via crafted returnTo.
Patch when possible
- affected< 1.0.14
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.