How severe is CVE-2017-1000154?

CVE-2017-1000154 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-1000154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000154?

CVE-2017-1000154 primarily affects Mahara. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-1000154?

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

When was CVE-2017-1000154 published?

CVE-2017-1000154 was published on 2017-11-03 and last updated on 2026-06-17.

CVE-2017-1000154

CVE-2017-1000154 is a critical-severity vulnerability in Mahara with a CVSS 3.x base score of 9.8. 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Mahara
Published: 2017-11-03
Last modified: 2026-06-17

Description

Mahara 15.04 before 15.04.8 and 15.10 before 15.10.4 and 16.04 before 16.04.2 are vulnerable to some authentication methods, which do not use Mahara's built-in login form, still allowing users to log in even if their institution was expired or suspended.

Frequently asked questions

What is CVE-2017-1000154?: Mahara 15.04 before 15.04.8 and 15.10 before 15.10.4 and 16.04 before 16.04.2 are vulnerable to some authentication methods, which do not use Mahara's built-in login form, still allowing users to log in even if their institution was expired or suspended.
How severe is CVE-2017-1000154?: CVE-2017-1000154 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-1000154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000154?: CVE-2017-1000154 primarily affects Mahara. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-1000154?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-1000154 published?: CVE-2017-1000154 was published on 2017-11-03 and last updated on 2026-06-17.

References

https://bugs.launchpad.net/mahara/+bug/1580399

Affected products (18)

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: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:15.10.0:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.10.1:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.10.2:*:*:*:*:*:*:*
cpe:2.3:a:mahara:mahara:15.10.3:*:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-45480 — Critical (CVSS 10.0): Improper authentication in Azure Active Directory allows an unauthorized attacker to elevate privileges over a network.
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CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →