CVE-2026-34841
Bruno 3.2.1 supply-chain RCE via compromised axios in @usebruno/cli
Is CVE-2026-34841 being exploited?
Not confirmed. CVE-2026-34841 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 0.23% probability of exploitation in the next 30 days.
How severe is CVE-2026-34841?
CVE-2026-34841 is rated Critical with a CVSS score of 9.8. 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-2026-34841?
Yes. A fix has been recorded for CVE-2026-34841. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-34841 affect?
CVE-2026-34841 affects Bruno IDE (<=3.2.0), @usebruno/cli, axios (compromised version). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-34841?
Upgrade to Bruno 3.2.1; audit npm installs; re-lock dependencies.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via compromised axios during npm install; attacker could run code on user systems.
Patch when possible
- affected< 3.2.1
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.