How severe is CVE-2026-40545?

CVE-2026-40545 has a CVSS 4.0 base score of 5.1, rated medium severity.

Is CVE-2026-40545 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-40545?

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

Does CVE-2026-40545 have an EU (EUVD) identifier?

Yes. CVE-2026-40545 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33611.

When was CVE-2026-40545 published?

CVE-2026-40545 was published on 2026-06-01 and last updated on 2026-06-17.

CVE-2026-40545

CVE-2026-40545 is a medium-severity vulnerability with a CVSS 4.0 base score of 5.1. 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-79.

Key facts

Severity: Medium (CVSS 4.0 base score 5.1)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-33611
Weakness: CWE-79
Published: 2026-06-01
Last modified: 2026-06-17

Description

SOPlanning is vulnerable to Reflected XSS via the taches parameter. An attacker can craft a malicious URL which, when opened by authenticated victim, results in arbitrary JavaScript execution in the victim’s browser. This issue affects SOPlanning version 1.55 and below.

Frequently asked questions

What is CVE-2026-40545?: SOPlanning is vulnerable to Reflected XSS via the taches parameter. An attacker can craft a malicious URL which, when opened by authenticated victim, results in arbitrary JavaScript execution in the victim’s browser. This issue affects SOPlanning version 1.55 and below.
How severe is CVE-2026-40545?: CVE-2026-40545 has a CVSS 4.0 base score of 5.1, rated medium severity.
Is CVE-2026-40545 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-40545?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-40545 have an EU (EUVD) identifier?: Yes. CVE-2026-40545 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-33611.
When was CVE-2026-40545 published?: CVE-2026-40545 was published on 2026-06-01 and last updated on 2026-06-17.

References

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