How severe is CVE-2023-31465?

CVE-2023-31465 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-2023-31465 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 44% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-31465?

CVE-2023-31465 affects Fsmlabs Timekeeper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-31465?

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-2023-31465 published?

CVE-2023-31465 was published on 2023-07-26 and last updated on 2026-06-17.

CVE-2023-31465

CVE-2023-31465 is a critical-severity vulnerability in Fsmlabs Timekeeper with a CVSS 3.x base score of 9.8. Its EPSS exploit-prediction score of 44% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 44% (99th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Fsmlabs Timekeeper
Published: 2023-07-26
Last modified: 2026-06-17

Description

An issue was discovered in FSMLabs TimeKeeper 8.0.17 through 8.0.28. By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call. Some query parameters are passed directly in the URL and named arg[x], with x an integer starting from 1; it is possible to modify arg[2] to insert Bash code that will be executed directly by the server.

Frequently asked questions

What is CVE-2023-31465?: An issue was discovered in FSMLabs TimeKeeper 8.0.17 through 8.0.28. By intercepting requests from various timekeeper streams, it is possible to find the getsamplebacklog call. Some query parameters are passed directly in the URL and named arg[x], with x an integer starting from 1; it is possible to modify arg[2] to insert Bash code that will be executed directly by the server.
How severe is CVE-2023-31465?: CVE-2023-31465 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-2023-31465 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 44% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-31465?: CVE-2023-31465 affects Fsmlabs Timekeeper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-31465?: 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-2023-31465 published?: CVE-2023-31465 was published on 2023-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:fsmlabs:timekeeper:*:*:*:*:*:*:*:*

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CVE-2023-31466 — Medium (CVSS 5.4): An XSS issue was discovered in FSMLabs TimeKeeper 8.0.17. On the "Configuration -> Compliance -> Add a new compliance…

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