cve.bz

CVE-2026-34750

6.5 mediumEPSS 0.3%

Payload is a free and open source headless content management system. Prior to version 3.78.0 in @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3, the client-upload signed-URL endpoints for S3, GCS, Azure, and R2 did not properly sanitize filenames. An attacker could craft filenames to escape the intended storage location. This issue has been patched in version 3.78.0 for @payloadcms/storage-azure, @payloadcms/storage-gcs, @payloadcms/storage-r2, and @payloadcms/storage-s3.

CVSS 3.1
6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
EPSS
0.3% chance of exploitation in the next 30 days; higher than 27% of CVEs (scores of 2026-10-25)
CWE
CWE-22
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-frq9-7j6g-v74xnpm@payloadcms/storage-azure<3.78.03.78.0
GHSA-frq9-7j6g-v74xnpm@payloadcms/storage-gcs<3.78.03.78.0
GHSA-frq9-7j6g-v74xnpm@payloadcms/storage-r2<3.78.03.78.0
GHSA-frq9-7j6g-v74xnpm@payloadcms/storage-s3<3.78.03.78.0

References

Check your stackJSON