CVE-2026-79312CWE-384

CVE-2026-79312

Medium · published September 22, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
20.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00286 · 20.0th percentile
Weakness
CWE-384 · Session Fixation
Published
2026-09-22T20:17Z
References (2)
https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79312.md · [email protected]https://github.com/webpy/webpy · [email protected]
EPSS history
Timeline
  • 24 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 22 SEP 00:00Z
    webpy web.py 0.76 is vulnerable to Session Fixation
    cvelistv5