CVE-2026-82286

gpt-crawler through 1.5.1 fails to validate the outputFileName parameter in the POST /crawl endpoint, allowing unauthenticated attackers to write arbitrary files to any filesystem path. Attackers can supply absolute paths or parent-directory segments to overwrite existing files with content sourced from attacker-controlled URLs.

CVSS v4.0

8.8 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

8.6 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L

EPSS

0.35% chance of exploitation in the next 30 days, 28th percentile

Published

2026-08-28

Updated

2026-08-31

Proof-of-concept exploits (1)

• BiiTts/CVE-2026-82286-gpt-crawler-Arbitrary-File-Write0★ · 2026-08-29

References

• CVE Record
• NVD entry

Related

• CVE-2025-1974
• CVE-2025-49113
• CVE-2026-12940
• CVE-2026-44789
• CVE-2026-46490
• CVE-2026-49230