PT-2026-29598 · Google+4 · Google Cloud Storage+4

Denolf · Published 2026-04-01 · Updated 2026-04-02 · CVE-2026-34750

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Name of the Vulnerable Software and Affected Versions Payload versions prior to 3.78.0

Description 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.

Recommendations Upgrade to version 3.78.0 or later.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2026-34750

GHSA-FRQ9-7J6G-V74X

Affected Products

Amazon S3

Azure

Google Cloud Storage

Pyload

R2

References · 5

• https://github.com/payloadcms/payload/security/advisories/GHSA-frq9-7j6g-v74x · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-frq9-7j6g-v74x · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-34750 · Security Note
• https://github.com/payloadcms/payload · Note
• https://twitter.com/CVEnew/status/2039647792310939702 · Twitter Post