CVE-2026-38968

ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking

Critical · published July 2, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
45.4
In the wild
Unconfirmed
What it is

ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking. HTTP session identifiers in src/HTTPserver.cpp use weak time-seeded pseudo-randomness during session creation. As a result, fresh authenticated logins can receive deterministic or colliding session cookies under attacker-controlled timing.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00553 · 45.4th percentile
Published
2026-07-02T00:00Z
EPSS history
Timeline
  • 02 JUL 00:00Z
    ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking
    cvelistv5