CVE-2017-5539

Severity: critical (CVSS 9.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-01-23 · updated 2026-06-17
Weakness: CWE-22

Description

The patch for directory traversal (CVE-2017-5480) in b2evolution version 6.8.4-stable has a bypass vulnerability. An attacker can use ..\/ to bypass the filter rule. Then, this attacker can exploit this vulnerability to delete or read any files on the server. It can also be used to determine whether a file exists.

Affected products

b2evolution: 6.8.4

References

http://b2evolution.net/downloads/6-8-5
http://www.securityfocus.com/bid/95700
https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a
https://github.com/b2evolution/b2evolution/issues/36
http://b2evolution.net/downloads/6-8-5
http://www.securityfocus.com/bid/95700
https://github.com/b2evolution/b2evolution/commit/e35f7c195d8c1103d2d981a48cda5ab45ecac48a
https://github.com/b2evolution/b2evolution/issues/36

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