How severe is CVE-2015-9240?

CVE-2015-9240 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2015-9240 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-9240?

CVE-2015-9240 affects Keystonejs Keystone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-9240?

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-2015-9240 published?

CVE-2015-9240 was published on 2018-05-29 and last updated on 2026-06-17.

CVE-2015-9240

CVE-2015-9240 is a high-severity vulnerability in Keystonejs Keystone with a CVSS 3.x base score of 7.5. 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-255.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-255
Affected product: Keystonejs Keystone
Published: 2018-05-29
Last modified: 2026-06-17

Description

Due to a bug in the the default sign in functionality in the keystone node module before 0.3.16, incomplete email addresses could be matched. A correct password is still required to complete sign in.

Frequently asked questions

What is CVE-2015-9240?: Due to a bug in the the default sign in functionality in the keystone node module before 0.3.16, incomplete email addresses could be matched. A correct password is still required to complete sign in.
How severe is CVE-2015-9240?: CVE-2015-9240 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2015-9240 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-9240?: CVE-2015-9240 affects Keystonejs Keystone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-9240?: 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-2015-9240 published?: CVE-2015-9240 was published on 2018-05-29 and last updated on 2026-06-17.

References

https://nodesecurity.io/advisories/60

Affected products (1)

cpe:2.3:a:keystonejs:keystone:*:*:*:*:*:node.js:*:*

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