How severe is CVE-2023-42183?

CVE-2023-42183 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-42183 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-42183?

CVE-2023-42183 affects Lockss Classic Lockss Daemon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-42183?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-42183 published?

CVE-2023-42183 was published on 2023-12-15 and last updated on 2026-06-17.

CVE-2023-42183

CVE-2023-42183 is a medium-severity vulnerability in Lockss Classic Lockss Daemon with a CVSS 3.x base score of 5.3. 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-116.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (43rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-116
Affected product: Lockss Classic Lockss Daemon
Published: 2023-12-15
Last modified: 2026-06-17

Description

lockss-daemon (aka Classic LOCKSS Daemon) before 1.77.3 performs post-Unicode normalization, which may allow bypass of intended access restrictions, such as when U+1FEF is converted to a backtick.

Frequently asked questions

What is CVE-2023-42183?: lockss-daemon (aka Classic LOCKSS Daemon) before 1.77.3 performs post-Unicode normalization, which may allow bypass of intended access restrictions, such as when U+1FEF is converted to a backtick.
How severe is CVE-2023-42183?: CVE-2023-42183 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2023-42183 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (43rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-42183?: CVE-2023-42183 affects Lockss Classic Lockss Daemon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-42183?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-42183 published?: CVE-2023-42183 was published on 2023-12-15 and last updated on 2026-06-17.

References

https://github.com/lockss/lockss-daemon/security/advisories/GHSA-mgqj-hphf-9588

Affected products (1)

cpe:2.3:a:lockss:classic_lockss_daemon:*:*:*:*:*:*:*:*

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