CRLF Injection Affecting libsoup package, versions [,3.7.1)
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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- published8 Mar 2026
- disclosed6 Mar 2026
- creditUnknown
Introduced: 6 Mar 2026
CVE-2026-3633 (opens in a new tab)How to fix?
Upgrade libsoup to version 3.7.1 or higher.
Overview
Affected versions of this package are vulnerable to CRLF Injection via the soup_message_new function. An attacker can manipulate HTTP headers and request data by supplying specially crafted input containing CRLF sequences.