Is CVE-2015-0881 being actively exploited?

CVE-2015-0881 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2015-0881?

CVE-2015-0881 has a CVSS 2.0 base score of 4.3 (MEDIUM).

CVE-2015-0881

MEDIUM · CVSS 4.3EPSS 4.5%EU EUVD

CRLF injection vulnerability in Squid before 3.1.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via a crafted header in a response.

Key facts

CVSS score: 4.3 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:M/Au:N/C:N/I:P/A:N
EPSS score: 4.5% (92th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2015-0891)
Published: February 20, 2015
NVD last modified: June 17, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2015-0891 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

squid-cache / squid

References

http://jvn.jp/en/jp/JVN64455813/index.html(Vendor Advisory)
http://jvndb.jvn.jp/jvndb/JVNDB-2015-000019(Vendor Advisory)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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