CVE-2026-114418
Description
A flaw was found in phodav. The service fails to properly enforce authentication failures during HTTP PUT requests, continuing to process file uploads even after the request has been rejected. A remote, unauthenticated attacker can exploit this flaw to create or overwrite files within the shared directory, bypassing configured authentication controls.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
If WebDAV folder sharing is not required in guest virtual machines, stop and mask the spice-webdavd service:
systemctl stop spice-webdavd
systemctl mask spice-webdavd
If the service or standalone chezdav server is required, restrict network access to the listening port using firewall rules to allow connections only from trusted hosts or localhost:
firewall-cmd --permanent --zone=public --remove-port=8080/tcp
firewall-cmd --reload
Caveats:
Disabling spice-webdavd prevents shared folder functionality between the host and virtual machine guests.
Warning:
Stopping the service terminates active file transfer sessions immediately. Modifying and reloading firewall rules may temporarily interrupt network connectivity.
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability,Access Control
Technical Impact: Read Application Data; Gain Privileges or Assume Identity; Execute Unauthorized Code or Commands
This weakness can lead to the exposure of resources or functionality to unintended actors, possibly providing attackers with sensitive information or even execute arbitrary code.
Acknowledgements
This issue was discovered by Marc-André Lureau (Red Hat).
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