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Critical severity · published Jul 2, 2026
CVE-2026-38968
ntopng through 6.6 is vulnerable to Predictable Session Identifier which can lead to Session Hijacking
9.8
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NT
Ntopng · Ntop
through 6.6 · source: NVD
Affected product
NT
Ntopng
Ntop
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-38968
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-38968
Patch
https://github.com/ntop/ntopng/commit/14e22497233dc7d31d19dccb74b13bb073d16c2c
Patch
https://github.com/ntop/ntopng/commit/179a346ceb6239fd36128ccca3efa8f9ea61eeb5
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