CVE-2026-47764
pdm <2.27.0 path traversal in write_to_fs allows arbitrary file writes via crafted wheel
Is CVE-2026-47764 being exploited?
Not confirmed. CVE-2026-47764 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 0.15% probability of exploitation in the next 30 days.
How severe is CVE-2026-47764?
CVE-2026-47764 is rated High with a CVSS score of 8.4. 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-2026-47764?
Yes. A fix has been recorded for CVE-2026-47764. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-47764 affect?
CVE-2026-47764 affects pdm <2.27.0, Developer workstations, CI/CD systems using pdm. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-47764?
Upgrade pdm to >=2.27.0; avoid untrusted wheels; audit recent installs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Path traversal in InstallDestination.write_to_fs lets malicious wheels write arbitrary files, enabling persistence or potential code execution on affected hosts.
Patch when possible
- affected< 2.27.0
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.