What is CVE-2021-29368?

CVE-2021-29368 is a high-severity vulnerability in Cuppacms, classified under Session Fixation. CVSS score: 8.8/10. Published 2023-01-20.

How severe is CVE-2021-29368?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2021-29368 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cuppacms

CVE-2021-29368

Session fixation vulnerability in CuppaCMS thru commit 4c9b742b23b924cf4c1f943f48b278e06a17e297 on November 12, 2019 allows attackers to gain access to arbitrary user sessions.

Published 2023-01-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (51.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Cuppacms

Weakness classification (CWE)

CWE-384 — Session Fixation

Public proof-of-concept exploits

References

github.com/CuppaCMS/CuppaCMS/issues/8 (Exploit, Third Party Advisory, Mitigation, Issue Tracking)

Frequently asked questions

What is CVE-2021-29368?: CVE-2021-29368 is a high-severity vulnerability in Cuppacms, classified under Session Fixation. CVSS score: 8.8/10. Published 2023-01-20.
How severe is CVE-2021-29368?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2021-29368 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.