What is CVE-2023-30758?

CVE-2023-30758 is a medium-severity vulnerability in Implem Inc. Pleasanter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-06-01.

How severe is CVE-2023-30758?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Implem Inc. Pleasanter

CVE-2023-30758

Cross-site scripting vulnerability in Pleasanter 1.3.38.1 and earlier allows a remote authenticated attacker to inject an arbitrary script.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2023-06-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Implem Inc. Pleasanter — versions 1.3.38.1 and earlier
Pleasanter

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

pleasanter.org/archives/vulnerability-update-202305 (Patch, Vendor Advisory)
github.com/Implem/Implem.Pleasanter/issues/474 (Exploit, Patch, Third Party Advisory, Issue Tracking)
jvn.jp/en/jp/JVN62111727/ (Third Party Advisory)

Frequently asked questions

What is CVE-2023-30758?: CVE-2023-30758 is a medium-severity vulnerability in Implem Inc. Pleasanter, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2023-06-01.
How severe is CVE-2023-30758?: Medium severity. CVSS v3 base score is 5.4 out of 10.