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SCA: security update for guzzlehttp/psr7 (GHSA-34xg-wgjx-8xph)

medium Tenable Cloud Security Plugin ID 443073

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 contain
 improper Host header validation when parsing raw HTTP request messages and when deriving a server request
 URI from server variables. An attacker can provide a malformed Host header containing URI authority
 delimiters, such as `[email protected]`. When the Host value is used to construct a URI, the
 malformed value can be reinterpreted as URI userinfo and host. This can cause the PSR-7 request URI host
 to differ from the original Host header value. Applications are affected if they parse attacker-controlled
 raw HTTP requests with `GuzzleHttp\Psr7\Message::parseRequest()` or the legacy 1.x
 `GuzzleHttp\Psr7\parse_request()` function, or if they build server requests from attacker-controlled
 server variables, then rely on the resulting URI host for routing, allow-list checks, or forwarding
 decisions. In affected forwarding or gateway scenarios, this may cause requests or credentials to be sent
 to an unintended host. The issue is patched in `2.10.2`. `1.x` is end-of-life and will not receive a
 patch. Some workarounds are available. Validate the `Host` header as `uri-host [ ":" port ]` before
 calling `Message::parseRequest()` or legacy `parse_request()` on untrusted HTTP request data, or before
 deriving routing and forwarding decisions from a parsed request URI. Reject Host values containing
 userinfo, path, query, or fragment delimiters. (CVE-2026-48998)

Solution

Update the guzzlehttp/psr7 library and its related packages to version 2.10.2 or later.

See Also

https://github.com/advisories/GHSA-34xg-wgjx-8xph

Plugin Details

Severity: Medium

ID: 443073

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 6/11/2026

Updated: 6/30/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2026-48998

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 6/11/2026

Vulnerability Publication Date: 6/11/2026

Reference Information

CVE: CVE-2026-48998