CVE-2026-82447
Sandbox escape in Skyvern TextPromptBlock enabling server-side code execution.
Is CVE-2026-82447 being exploited?
Not confirmed. CVE-2026-82447 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 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-82447?
CVE-2026-82447 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-2026-82447?
Yes. A fix has been recorded for CVE-2026-82447. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-82447 affect?
CVE-2026-82447 affects Skyvern < 1.0.45, skyvern forge/sdk TextPromptBlock (prompting.py, block.py). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82447?
Upgrade to Skyvern v1.0.45+; restrict untrusted inputs; run service with least privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution as the server process via injected Jinja template in workflow parameters or upstream block output.
Immediate action required
- affected>= 0.2.1 and < 1.0.45
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.