How severe is CVE-2015-3154?

CVE-2015-3154 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2015-3154 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3154?

CVE-2015-3154 affects Zend Zend Framework. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-3154?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-3154 published?

CVE-2015-3154 was published on 2020-01-27 and last updated on 2026-06-17.

CVE-2015-3154

CVE-2015-3154 is a medium-severity vulnerability in Zend Zend Framework with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-74
Affected product: Zend Zend Framework
Published: 2020-01-27
Last modified: 2026-06-17

Description

CRLF injection vulnerability in Zend\Mail (Zend_Mail) in Zend Framework before 1.12.12, 2.x before 2.3.8, and 2.4.x before 2.4.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the header of an email.

Frequently asked questions

What is CVE-2015-3154?: CRLF injection vulnerability in Zend\Mail (Zend_Mail) in Zend Framework before 1.12.12, 2.x before 2.3.8, and 2.4.x before 2.4.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via CRLF sequences in the header of an email.
How severe is CVE-2015-3154?: CVE-2015-3154 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2015-3154 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3154?: CVE-2015-3154 affects Zend Zend Framework. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-3154?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3154 published?: CVE-2015-3154 was published on 2020-01-27 and last updated on 2026-06-17.

References

http://framework.zend.com/security/advisory/ZF2015-04

Affected products (1)

cpe:2.3:a:zend:zend_framework:*:*:*:*:*:*:*:*

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