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SCA: security update for symfony/mime, symfony/symfony (GHSA-qpmx-3rfj-7rhv)

medium Tenable Cloud Security Plugin ID 442416

Description

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

 - ### Description `Symfony\Component\Mime\Address` is the value-object every Symfony Mailer address
 (to/cc/bcc/from/reply-to) flows through; its constructor is documented as validating the address and
 throwing on invalid input, so developers treat it as a security boundary. The constructor accepts email
 addresses whose local-part (the part before `@`) is an RFC-5322 *quoted string* containing raw `\r\n`
 bytes — e.g. `"x\r\nBcc: attacker@evil"@example.com`. The stored address is later emitted verbatim into
 (1) the rendered message headers and (2) `SmtpTransport`'s `MAIL FROM:<...>` / `RCPT TO:<...>` protocol
 lines, turning the embedded CRLF into a new mail header and/or a new SMTP command. ### Resolution The
 `Address` constructor now rejects addresses containing line breaks. The patch for this issue is available
 [here](https://github.com/symfony/symfony/commit/dc2dbd29211eb4ddc451373fa1374fb926e94604) for branch 5.4.
 ### Credits We would like to thank Claude Mythos Preview (via Project Glasswing) for reporting the issue
 and providing the fix. (CVE-2026-45067)

Solution

Update the symfony/mime library and its related packages to version 5.4.52 or later.

See Also

https://github.com/advisories/GHSA-qpmx-3rfj-7rhv

Plugin Details

Severity: Medium

ID: 442416

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 5/28/2026

Updated: 7/15/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.1

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-45067

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.3

Threat Score: 1.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2026

Vulnerability Publication Date: 5/27/2026

Reference Information

CVE: CVE-2026-45067

cwe: CWE-93