How severe is CVE-2015-8314?

CVE-2015-8314 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 high, integrity none, and availability none.

Is CVE-2015-8314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-8314?

CVE-2015-8314 affects Heartcombo Devise. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-8314?

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-2015-8314 published?

CVE-2015-8314 was published on 2023-12-12 and last updated on 2026-06-17.

CVE-2015-8314

CVE-2015-8314 is a high-severity vulnerability in Heartcombo Devise 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-312.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Heartcombo Devise
Published: 2023-12-12
Last modified: 2026-06-17

Description

The Devise gem before 3.5.4 for Ruby mishandles Remember Me cookies for sessions, which may allow an adversary to obtain unauthorized persistent application access.

Frequently asked questions

What is CVE-2015-8314?: The Devise gem before 3.5.4 for Ruby mishandles Remember Me cookies for sessions, which may allow an adversary to obtain unauthorized persistent application access.
How severe is CVE-2015-8314?: CVE-2015-8314 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 high, integrity none, and availability none.
Is CVE-2015-8314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-8314?: CVE-2015-8314 affects Heartcombo Devise. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-8314?: 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-2015-8314 published?: CVE-2015-8314 was published on 2023-12-12 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:heartcombo:devise:*:*:*:*:*:ruby:*:*

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