How severe is CVE-2017-9551?

CVE-2017-9551 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-9551 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-9551?

CVE-2017-9551 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-2017-9551?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-9551 published?

CVE-2017-9551 was published on 2017-09-25 and last updated on 2026-06-17.

CVE-2017-9551

CVE-2017-9551 is a medium-severity vulnerability in Mahara with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Mahara
Published: 2017-09-25
Last modified: 2026-06-17

Description

Mahara 15.04 before 15.04.14 and 16.04 before 16.04.8 and 16.10 before 16.10.5 and 17.04 before 17.04.3 are vulnerable to a user submitting potential dangerous payload, e.g. XSS code, to be saved as their name in the usr_registration table. The values are then emailed to the the user and administrator and if accepted become part of the new user's account.

Frequently asked questions

What is CVE-2017-9551?: Mahara 15.04 before 15.04.14 and 16.04 before 16.04.8 and 16.10 before 16.10.5 and 17.04 before 17.04.3 are vulnerable to a user submitting potential dangerous payload, e.g. XSS code, to be saved as their name in the usr_registration table. The values are then emailed to the the user and administrator and if accepted become part of the new user's account.
How severe is CVE-2017-9551?: CVE-2017-9551 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-9551 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-9551?: CVE-2017-9551 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-2017-9551?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-9551 published?: CVE-2017-9551 was published on 2017-09-25 and last updated on 2026-06-17.

References

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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