CRLF Injection Affecting drupal-10.6 package, versions <10.6.12-r0
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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Test your applications- Snyk IDSNYK-MINIMOSLATEST-DRUPAL106-17434070
- published24 Jun 2026
- disclosed23 Jun 2026
Introduced: 23 Jun 2026
CVE-2026-55766 (opens in a new tab)How to fix?
Upgrade Minimos:latest drupal-10.6 to version 10.6.12-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream drupal-10.6 package and not the drupal-10.6 package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Prior to 2.12.1, guzzlehttp/psr7 did not reject CR/LF characters in certain first-party HTTP start-line fields: the request method, protocol version, and response reason phrase. If an application placed attacker-controlled data into one of those fields and later serialized the PSR-7 message as raw HTTP/1.x, for example with Message::toString() or an equivalent serializer, the serialized message could contain attacker-controlled header lines. The issue can also be reached through Message::parseRequest() or Message::parseResponse() when malformed raw messages are parsed into first-party PSR-7 objects and then serialized again. Creating or modifying a Request, Response, or other PSR-7 object alone is not sufficient. The issue requires the malformed message to be serialized and written to the network, forwarded, replayed, or otherwise processed by software that does not independently reject the malformed start line. This vulnerability is fixed in 2.12.1.