CVE-2026-46458: Credential exposure in ICU Scandinavia Boomerang

Severity: high (CVSS 7.1 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-07-15 · updated 2026-10-24
Weakness: CWE-522

Description

ICU Scandinavia Boomerang is vulnerable to an information disclosure flaw where sensitive credential files are exposed via static HTTP. This allows an unauthenticated remote attacker to retrieve plaintext service account and SMTP credentials by requesting specific XML files from the webroot. This issue has been fixed in version 2.4.18.029

Affected products

ICU Scandinavia Boomerang: before 2.4.18.029 — fixed in 2.4.18.029

How to fix

Upgrade to a fixed version: ICU Scandinavia Boomerang 2.4.18.029. Check the vendor advisory for mitigations.

References

https://cert.pl/posts/2026/07/CVE-2026-46458
https://icuscandinavia.se/boomerang-quality-assurance-lab/

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