Infinite loop Affecting system.security.cryptography.xml package, versions [8.0.0-preview.1.23110.8,8.0.3)[9.0.0-preview.1.24080.9,9.0.15)[10.0.0-preview.1.25080.5,10.0.7)[11.0.0-preview.1.26104.118,11.0.0-preview.3.26207.106)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published15 Apr 2026
- disclosed14 Apr 2026
- creditLudvig Pedersen
Introduced: 14 Apr 2026
NewCVE-2026-33116 (opens in a new tab)How to fix?
Upgrade System.Security.Cryptography.Xml to version 8.0.3, 9.0.15, 10.0.7, 11.0.0-preview.3.26207.106 or higher.
Overview
Affected versions of this package are vulnerable to Infinite loop in the EncryptedXml class. An attacker can cause an infinite loop and exhaust system resources by submitting specially crafted XML data.
Note:
The patch in version 10.0.6 introduced a regression and users are strongly advised to upgrade to 10.0.7. Regression discussion. While investigating regression, a Critical security issue CVE-2026-40372 was discovered and patched in version 10.0.7. 8.0.x and 9.0.x packages are not affected