How severe is CVE-2021-29368?

CVE-2021-29368 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-29368 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-29368?

CVE-2021-29368 affects Cuppacms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-29368?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-29368 published?

CVE-2021-29368 was published on 2023-01-20 and last updated on 2026-06-17.

CVE-2021-29368

CVE-2021-29368 is a high-severity vulnerability in Cuppacms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-384.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Cuppacms
Published: 2023-01-20
Last modified: 2026-06-17

Description

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

Frequently asked questions

What is CVE-2021-29368?: Session fixation vulnerability in CuppaCMS thru commit 4c9b742b23b924cf4c1f943f48b278e06a17e297 on November 12, 2019 allows attackers to gain access to arbitrary user sessions.
How severe is CVE-2021-29368?: CVE-2021-29368 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-29368 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-29368?: CVE-2021-29368 affects Cuppacms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-29368?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-29368 published?: CVE-2021-29368 was published on 2023-01-20 and last updated on 2026-06-17.

References

https://github.com/CuppaCMS/CuppaCMS/issues/8

Affected products (1)

cpe:2.3:a:cuppacms:cuppacms:*:*:*:*:*:*:*:*

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