SPEmailHandler-PHP has Potential Abuse for Sending Arbitrary Emails

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2024-53860: 0.46% estimated exploitation activity in the next 30 days; percentile 40.22 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact Messages sent using this script are vulnerable to abuse, as the script allows anybody to specify arbitrary email recipients and include user-provided content in confirmation emails. This could enable malicious actors to use your server to send spam, phishing emails, or other malicious content, potentially damaging your domain's reputation and leading to blacklisting by email providers. Patches Patched in version 1.0.0 by removing user-provided content from confirmation emails. All pre-release versions (alpha and beta) are vulnerable to this issue and should not be used. Workarounds There are no workarounds for this issue. Users must upgrade to version 1.0.0 to mitigate the vulnerability.

Published by the source

27 Nov 2024, 21:59 UTC

Last modified by the source

2 Dec 2024, 18:03 UTC

Source last checked

26 Oct 2026, 14:29 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-mj5r-x73q-fjw6

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2024-53860

Advisory: SPEmailHandler-PHP has Potential Abuse for Sending Arbitrary Emails
IDs: CVE-2024-53860, GHSA-mj5r-x73q-fjw6
Record: https://patchnext.com/advisories/cve-2024-53860 (revision 1, source checked 26 Oct 2026, 14:29 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: spencer14420/sp-php-email-handler 1.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist spencer14420/sp-php-email-handler: affected < 1.0.0; fixed in 1.0.0

## Suggested inspection (read-only)
- Packagist spencer14420/sp-php-email-handler: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on spencer14420/sp-php-email-handler.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-mj5r-x73q-fjw6 (GitHub-reviewed advisory GHSA-mj5r-x73q-fjw6 lists affected ranges: Packagist spencer14420/sp-php-email-handler >=0 <1.0.0)

Commands are suggestions: review each one before running it.