CVE-2026-88829 BusyBox httpd - Path Traversal

BusyBox httpd contains a path traversal caused by improper path rewriting in reverse proxy feature, letting remote attackers access arbitrary backend paths, exploit requires crafted pipelined HTTP requests.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.32% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Path Traversal
Impact
File System Read, Information Disclosure
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
14 October 2026
Updated
15 October 2026
Weakness
CWE-444

Vendor fix

Update to the latest BusyBox version with the fix for reverse proxy path rewriting.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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