How severe is CVE-2017-14163?

CVE-2017-14163 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-14163 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-14163?

CVE-2017-14163 primarily affects Mahara. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-14163?

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-2017-14163 published?

CVE-2017-14163 was published on 2017-10-31 and last updated on 2026-06-17.

CVE-2017-14163

CVE-2017-14163 is a high-severity vulnerability in Mahara 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)
CVSS v2: 6.5
EPSS exploit prediction: 1% (56th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-384
Affected product: Mahara
Published: 2017-10-31
Last modified: 2026-06-17

Description

An issue was discovered in Mahara before 15.04.14, 16.x before 16.04.8, 16.10.x before 16.10.5, and 17.x before 17.04.3. When one closes the browser without logging out of Mahara, the value in the usr_session table is not removed. If someone were to open a browser, visit the Mahara site, and adjust the 'mahara' cookie to the old value, they can get access to the user's account.

Frequently asked questions

What is CVE-2017-14163?: An issue was discovered in Mahara before 15.04.14, 16.x before 16.04.8, 16.10.x before 16.10.5, and 17.x before 17.04.3. When one closes the browser without logging out of Mahara, the value in the usr_session table is not removed. If someone were to open a browser, visit the Mahara site, and adjust the 'mahara' cookie to the old value, they can get access to the user's account.
How severe is CVE-2017-14163?: CVE-2017-14163 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-14163 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-14163?: CVE-2017-14163 primarily affects Mahara. In total, 38 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-14163?: 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-2017-14163 published?: CVE-2017-14163 was published on 2017-10-31 and last updated on 2026-06-17.

References

https://bugs.launchpad.net/mahara/+bug/1701978

Affected products (38)

cpe:2.3:a:mahara:mahara:15.04:rc1:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04:rc2:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.0:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.1:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.2:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.3:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.4:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.5:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.6:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.7:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.8:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.9:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.10:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.11:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.12:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.04.13:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04:rc1:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04:rc2:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.0:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.1:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.2:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.3:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.4:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.5:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.6:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.04.7:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10:rc1:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10:rc2:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10.2:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10.3:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:16.10.4:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:17.04:rc1:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:17.04:rc2:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:17.04.0:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:17.04.1:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:17.04.2:*:*:*:*:*:*:*

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