What is CVE-2026-48019?
Laravel is a web application framework. Prior to versions 12.60.0 and 13.10.0, a CRLF injection vulnerability in Laravel's email validation, in combination with how Symfony Mailer and Symfony Mime handle certain character sequences, may allow an unauthenticated attacker to interfere with outbound email processing in applications that send mail to user-supplied addresses. This issue has been patched in versions 12.60.0 and 13.10.0.
The record classifies CVE-2026-48019 under weakness class CWE-93. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 53 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 8.9 — HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L - EPSS (FIRST)
- 0.5% probability of exploitation in the next 30 days, higher than 41.7% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 8.1/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-09-04, last modified 2026-09-08
Is CVE-2026-48019 being exploited?
Weaponised exploit code for CVE-2026-48019 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 44 in the Threadlinqs vulnerability feed.
- derrickschoen/laravel-framework (github)
Affected products and versions
- laravel: framework
How to fix CVE-2026-48019
No vendor patch reference has been recorded for CVE-2026-48019 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-48019
1 tracked threat in the Threadlinqs corpus references CVE-2026-48019, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .