What’s Vulnerable › Vulnerabilities

CVE-2026-26378

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-06-03 · updated 2026-07-22
• Weakness: CWE-79

Description

Cross Site Scripting vulnerability in Koha 25.11 and before allows a remote attacker to execute arbitrary code via file upload function in Invoice features

Affected products

• Koha Community Koha: through 25.11.00

References

• https://g03m0n.github.io
• https://g03m0n.github.io/posts/cve-2026-26378/
• https://github.com/Koha-Community/Koha
• https://g03m0n.github.io/posts/cve-2026-26378/

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