Vulnerability · Published Jul 2, 2026 · Assigned by mitre
CVE-2026-38968
Critical 9.8
In plain English
A critical-severity security flaw in the ntopng package (Ubuntu). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.6%top 53.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu:22.04:LTS | ntopng | no fix listed | UBUNTU-CVE-2026-38968 |
| Ubuntu:24.04:LTS | ntopng | no fix listed | UBUNTU-CVE-2026-38968 |
| Ubuntu:25.10 | ntopng | no fix listed | UBUNTU-CVE-2026-38968 |
Affected products (as reported)
Weakness: CWE-341 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H