How severe is CVE-2023-5838?

CVE-2023-5838 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-2023-5838 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-5838?

CVE-2023-5838 affects Linkstack. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-5838?

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-2023-5838 published?

CVE-2023-5838 was published on 2023-10-29 and last updated on 2026-06-17.

CVE-2023-5838

CVE-2023-5838 is a critical-severity vulnerability in Linkstack 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-613.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Linkstack
Published: 2023-10-29
Last modified: 2026-06-17

Description

Insufficient Session Expiration in GitHub repository linkstackorg/linkstack prior to v4.2.9.

Frequently asked questions

What is CVE-2023-5838?: Insufficient Session Expiration in GitHub repository linkstackorg/linkstack prior to v4.2.9.
How severe is CVE-2023-5838?: CVE-2023-5838 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-2023-5838 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-5838?: CVE-2023-5838 affects Linkstack. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-5838?: 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-2023-5838 published?: CVE-2023-5838 was published on 2023-10-29 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linkstack:linkstack:*:*:*:*:*:*:*:*

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