CVE-2026-34581
RCE via Share Token bypass in goshs SimpleHTTPServer (1.1.0–2.0.0-beta.2).
Is CVE-2026-34581 being exploited?
Not confirmed. CVE-2026-34581 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 0.39% probability of exploitation in the next 30 days.
How severe is CVE-2026-34581?
CVE-2026-34581 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-2026-34581?
Yes. A fix has been recorded for CVE-2026-34581. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34581 affect?
CVE-2026-34581 affects goshs (Go SimpleHTTPServer) <= 2.0.0-beta.2. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34581?
Upgrade to 2.0.0-beta.2 or newer
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via Share Token bypass; attacker can download arbitrary files and execute code on the server.
Patch when possible
- affected>= 1.1.0 and < 2.0.0-beta.2
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.