HTTP Request Smuggling Affecting php-standard-library/php-standard-library package, versions >=6.1.0, <6.1.2>=6.2.0, <6.2.1
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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Test your applications- Snyk IDSNYK-PHP-PHPSTANDARDLIBRARYPHPSTANDARDLIBRARY-17660506
- published27 Jun 2026
- disclosed26 Jun 2026
- creditazjezz
Introduced: 26 Jun 2026
NewCVE-2026-48979 (opens in a new tab)How to fix?
Upgrade php-standard-library/php-standard-library to version 6.1.2, 6.2.1 or higher.
Overview
Affected versions of this package are vulnerable to HTTP Request Smuggling in the ServerConnection process. An attacker can bypass application-level size limits or cause incorrect application behavior by sending HTTP/2 DATA frames with a total byte count that does not match the declared content-length header, either by sending excess data to smuggle additional content or by sending insufficient data and closing the stream early. This is only exploitable if the application directly uses ServerConnection to accept untrusted client traffic.