CVE-2016-10034Zend Framework Command Injection
zend-mail remote code execution via Sendmail adapter
Published May 14, 2022 · Updated Jul 8, 2026 · Also known as GHSA-r9mw-gwx9-v3h5
Key Facts
Patch immediately- CVE-2016-10034 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Zend Framework, Zend-Mail, zendframework/zend-mail (composer).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 38% probability of exploitation in the next 30 days.
- Fixed versions are available, including Zend Framework 2.4.10, Zend-Mail 2.4.10, zendframework/zend-mail 2.4.11.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v3.1
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
38%
Higher than 98.5% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
54/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
3
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
The setFrom function in the Sendmail adapter in the zend-mail component before 2.4.11, 2.5.x, 2.6.x, and 2.7.x before 2.7.2, and Zend Framework before 2.4.11 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted e-mail address.
Affected Products
11 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Zend FrameworkZend | See advisory | 2.4.10 |
| Zend-MailZend | 2.5.0, 2.5.1, 2.5.2, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1 | 2.4.10 |
| zendframework/zend-mailcomposer | >= 2.7 | 2.7.2 |
Patched Releases
Zend Framework
2.4.10
Zend-Mail
2.4.10
zendframework/zend-mail
2.4.11, 2.7.2
Timeline
Publicly disclosed
May 14, 2022
Last updated
Jul 8, 2026
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
References
- advisorylegalhackers.com · CVE-2016-10034
- advisorynvd.nist.gov · CVE-2016-10034
- advisoryframework.zend.com · ZF2016-04
- advisoryGHSA advisory
- advisoryGLSA-201804-10
FAQ
Common Questions.
The setFrom function in the Sendmail adapter in the zend-mail component before 2.4.11, 2.5.x, 2.6.x, and 2.7.x before 2.7.2, and Zend Framework before 2.4.11 might allow remote attackers to pass extra parameters to the mail command and consequently execute arbitrary code via a \" (backslash double quote) in a crafted…
Affected: Zend Framework; Zend-Mail versions 2.5.0, 2.5.1, 2.5.2, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.7.1; zendframework/zend-mail (composer) versions >= 2.7. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including Zend Framework 2.4.10, Zend-Mail 2.4.10, zendframework/zend-mail 2.4.11.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
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