CVE-2017-5539

9.1 criticalEPSS 4.3%

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.

Severity

CVSS 3.0

9.1 critical

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 4.3% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
CWE: CWE-22
Published: 2017-01-23
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

b2evolution:b2evolution

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

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