Vulnerability · Published Sep 22, 2026 · Assigned by mitre
CVE-2026-79312
Medium 6.8
In plain English
A medium-severity session fixation in the webpy package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).
Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)0.3%top 78.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | webpy | no fix listed | DEBIAN-CVE-2026-79312 |
| Debian:13 | webpy | no fix listed | DEBIAN-CVE-2026-79312 |
| Debian:14 | webpy | no fix listed | DEBIAN-CVE-2026-79312 |
| Ubuntu:26.04:LTS | webpy | no fix listed | UBUNTU-CVE-2026-79312 |
| Ubuntu:26.10 | webpy | no fix listed | UBUNTU-CVE-2026-79312 |
Affected products (as reported)
Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N