UBUNTU-CVE-2026-49214

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-49214
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-49214
Upstream
Published
2026-06-11T13:16:00Z
Modified
2026-06-17T06:31:30Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 did not reject ASCII control characters, whitespace, or DEL in first-party URI host components. A vulnerable flow is: First, an application accepts a user-controlled URL. Second, the URL is used to construct a PSR-7 Uri or Request. Third, the host component contains CRLF or another header-unsafe character. Fourth, the host is copied into the PSR-7 Host header when no explicit Host header is provided. Finally, the request is serialized or sent by an HTTP client that does not independently reject the malformed host. In that flow, an attacker can cause the serialized request to contain additional attacker-controlled header lines. For example, a host containing "\r\nX-Injected: yes" can cause the generated Host header to span multiple HTTP header lines. Applications are affected when they use user-controlled URLs for outbound HTTP requests, URL forwarding, proxying, crawling, webhook delivery, or similar request-dispatch flows. In deployments involving HTTP/1.1 connection reuse, proxies, gateways, or load balancers, this malformed request may also contribute to request smuggling or cache poisoning, depending on how downstream components parse the request. The issue is patched in 2.10.2 and later. 1.x is end-of-life and will not receive a patch. As a workaround, validate and reject all untrusted URI strings before constructing PSR-7 Uri or Request instances. Reject input containing ASCII control characters, whitespace, or DEL, including CRLF, tab, space, NUL, or DEL characters. Applications that forward requests should also ensure the final HTTP client or serializer rejects invalid URI and header data before writing requests to the network.

References

Affected packages

Ubuntu:16.04:LTS
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.1.0-1
1.2.0-1
1.2.1-1
1.2.2-1
1.2.2-1build1
1.2.2-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "1.2.2-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"
Ubuntu:20.04:LTS
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.2-0.1
1.4.2-0.1+deb10u2build0.20.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "1.4.2-0.1+deb10u2build0.20.04.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"
Ubuntu:24.04:LTS
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.6.0-1
2.6.1-1
2.6.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "2.6.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"
Ubuntu:25.10
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.7.0-3
2.7.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "2.7.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"
Ubuntu:26.04:LTS
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.7.1-1
2.8.0-1
2.8.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "2.8.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"
Ubuntu:Pro:22.04:LTS
php-guzzlehttp-psr7

Package

Name
php-guzzlehttp-psr7
Purl
pkg:deb/ubuntu/php-guzzlehttp-psr7?arch=source&distro=esm-apps%2Fjammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.7.0-1
1.8.3-1
1.8.3-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "php-guzzlehttp-psr7",
            "binary_version": "1.8.3-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49214.json"