CVE-2026-42435
OpenClaw: argv-env var injection allows bypassing preflight and changing shell vars.
Is CVE-2026-42435 being exploited?
Not confirmed. CVE-2026-42435 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-42435?
CVE-2026-42435 is rated High with a CVSS score of 8.7. 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-2026-42435?
Yes. A fix has been recorded for CVE-2026-42435. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42435 affect?
CVE-2026-42435 affects OpenClaw 2026.2.22-2026.4.12. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42435?
Upgrade to patched OpenClaw version when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Bypasses exec preflight; can modify SHELLOPTS/PS4, altering execution semantics and security controls.
Patch when possible
- affected>= 2026.2.22 and < 2026.4.12
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.