CVE-2026-46491
Path traversal in SimpleSAMLphp CAS module enables file read/delete and unsafe unserialization.
Is CVE-2026-46491 being exploited?
Not confirmed. CVE-2026-46491 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 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-46491?
CVE-2026-46491 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-2026-46491?
Yes. A fix has been recorded for CVE-2026-46491. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-46491 affect?
CVE-2026-46491 affects SimpleSAMLphp casserver CAS module (up to 7.0.2). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-46491?
Upgrade to 7.0.3+; verify FileSystemTicketStore permissions.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Read/delete files outside the ticket dir; potential PHP unserialize leading to code execution or data exposure.
Patch when possible
- affected< 7.0.3
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.