CVE-2026-79659
Authenticated SSRF in Ech0 allows access to internal and cloud metadata endpoints.
Is CVE-2026-79659 being exploited?
Not confirmed. CVE-2026-79659 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 0.21% probability of exploitation in the next 30 days.
How severe is CVE-2026-79659?
CVE-2026-79659 is rated High with a CVSS score of 8.3. 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-2026-79659?
Yes. A fix has been recorded for CVE-2026-79659. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-79659 affect?
CVE-2026-79659 affects Ech0 < 4.7.3, Self-hosted Ech0 instances, Cloud metadata endpoints (AWS/Google/Azure). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-79659?
Upgrade Ech0 to 4.7.3, validate/whitelist URLs, and restrict metadata access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attackers can make server-side requests to arbitrary URLs, access internal services and cloud metadata, and potentially steal tokens/credentials.
Patch when possible
- affected< 4.7.3
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.