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GHSA-c795-2g9c-j48m
No affected components available
EverOS versions 1.0.0 and earlier are vulnerable to path traversal in the POST /api/v1/memory/add ingestion endpoint. The per-message sender_id field was not validated as a path-safe identifier (unlike app_id / project_id, which already enforced this). During user-memory extraction, sender_id is used as the owner_id and joined into the filesystem path where the extracted episode is persisted as a Markdown file. A sender_id containing ../ sequences could direct the write outside the configured memory root, allowing an unauthenticated caller to create or overwrite .md files at locations writable by the server process (unauthorized arbitrary file write). The file content is partially attacker-influenced.
Patch: Fixed in v1.0.1 with (1) path-safe validation on sender_id (character whitelist plus rejection of the . and .. tokens) and (2) a defense-in-depth containment check in the Markdown writer that rejects any write resolving outside the memory root before any filesystem access, covering both the write and the append read-modify-write paths.
Remediation: Upgrade to EverOS 1.0.1. There is no workaround for affected versions other than upgrading.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the integrity of the data. There is a low impact on the availability of the system.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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