# guzzlehttp/psr7 (Packagist) vulnerabilities

6 known vulnerabilities (1 high, 5 medium), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: not known (cve.now hasn't read this package's releases)
- Newest unaffected release: not known without release data
- Registry: https://packagist.org/packages/guzzlehttp/psr7

## Advisories (6)

### [CVE-2026-59882](https://cve.now/CVE-2026-59882): guzzlehttp/psr7: Host Confusion via Weak URI Host Validation

- Severity: Medium 4.2
- Published: Jul 8, 2026
- Affected: fixed in 2.12.3.

### [CVE-2026-55766](https://cve.now/CVE-2026-55766): guzzlehttp/psr7: CRLF Injection in HTTP Start-Line Serialization

- Severity: Medium 4.8
- Published: Jun 23, 2026
- Affected: fixed in 2.12.1.

### [CVE-2026-49214](https://cve.now/CVE-2026-49214): guzzlehttp/psr7 has CRLF Injection via URI Host Component

- Severity: Medium 5.3
- Published: Jun 11, 2026
- Affected: fixed in 2.10.2.

### [CVE-2026-48998](https://cve.now/CVE-2026-48998): guzzlehttp/psr7 has Host Confusion via Authority Reinterpretation

- Severity: Medium 5.3
- Published: Jun 11, 2026
- Affected: fixed in 2.10.2.

### [CVE-2023-29197](https://cve.now/CVE-2023-29197): Improper header name validation in guzzlehttp/psr7

- Severity: Medium 5.3
- Published: Apr 17, 2023
- Affected: fixed in 1.9.1; from 2.0.0, fixed in 2.4.5.

### [CVE-2022-24775](https://cve.now/CVE-2022-24775): Improper Input Validation in guzzlehttp/psr7

- Severity: High 7.5
- Published: Mar 21, 2022
- Affected: fixed in 1.8.4; from 2.0.0, fixed in 2.1.1.

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