Vulnerabilities (CVE)

Filtered by vendor Squid-cache Subscribe
Filtered by product Squid
Total 109 CVE
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2016-4556 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2026-05-06 5.0 MEDIUM 7.5 HIGH
Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via a crafted Edge Side Includes (ESI) response.
CVE-2016-2572 1 Squid-cache 1 Squid 2026-05-06 5.0 MEDIUM 7.5 HIGH
http.cc in Squid 4.x before 4.0.7 relies on the HTTP status code after a response-parsing failure, which allows remote HTTP servers to cause a denial of service (assertion failure and daemon exit) via a malformed response.
CVE-2016-2569 1 Squid-cache 1 Squid 2026-05-06 5.0 MEDIUM 7.5 HIGH
Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not properly append data to String objects, which allows remote servers to cause a denial of service (assertion failure and daemon exit) via a long string, as demonstrated by a crafted HTTP Vary header.
CVE-2016-3948 1 Squid-cache 1 Squid 2026-05-06 5.0 MEDIUM 7.5 HIGH
Squid 3.x before 3.5.16 and 4.x before 4.0.8 improperly perform bounds checking, which allows remote attackers to cause a denial of service via a crafted HTTP response, related to Vary headers.
CVE-2014-3609 1 Squid-cache 1 Squid 2026-05-06 5.0 MEDIUM N/A
HttpHdrRange.cc in Squid 3.x before 3.3.12 and 3.4.x before 3.4.6 allows remote attackers to cause a denial of service (crash) via a request with crafted "Range headers with unidentifiable byte-range values."
CVE-2016-4553 3 Canonical, Oracle, Squid-cache 3 Ubuntu Linux, Linux, Squid 2026-05-06 5.0 MEDIUM 8.6 HIGH
client_side.cc in Squid before 3.5.18 and 4.x before 4.0.10 does not properly ignore the Host header when absolute-URI is provided, which allows remote attackers to conduct cache-poisoning attacks via an HTTP request.
CVE-2011-3205 1 Squid-cache 1 Squid 2026-04-29 6.8 MEDIUM N/A
Buffer overflow in the gopherToHTML function in gopher.cc in the Gopher reply parser in Squid 3.0 before 3.0.STABLE26, 3.1 before 3.1.15, and 3.2 before 3.2.0.11 allows remote Gopher servers to cause a denial of service (memory corruption and daemon restart) or possibly have unspecified other impact via a long line in a response. NOTE: This issue exists because of a CVE-2005-0094 regression.
CVE-2011-4096 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
The idnsGrokReply function in Squid before 3.1.16 does not properly free memory, which allows remote attackers to cause a denial of service (daemon abort) via a DNS reply containing a CNAME record that references another CNAME record that contains an empty A record.
CVE-2013-1839 1 Squid-cache 1 Squid 2026-04-29 7.8 HIGH N/A
The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Accept-Language header.
CVE-2010-2951 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.
CVE-2013-0189 2 Canonical, Squid-cache 2 Ubuntu Linux, Squid 2026-04-29 5.0 MEDIUM N/A
cachemgr.cgi in Squid 3.1.x and 3.2.x, possibly 3.1.22, 3.2.4, and other versions, allows remote attackers to cause a denial of service (resource consumption) via a crafted request. NOTE: this issue is due to an incorrect fix for CVE-2012-5643, possibly involving an incorrect order of arguments or incorrect comparison.
CVE-2010-0639 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7 before 2.7.STABLE8, and htcp.cc in 3.0 before 3.0.STABLE24, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets to the HTCP port.
CVE-2010-3072 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
The string-comparison functions in String.cci in Squid 3.x before 3.1.8 and 3.2.x before 3.2.0.2 allow remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request.
CVE-2013-4123 2 Opensuse, Squid-cache 2 Opensuse, Squid 2026-04-29 5.0 MEDIUM N/A
client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.
CVE-2012-2213 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
Squid 3.1.9 allows remote attackers to bypass the access configuration for the CONNECT method by providing an arbitrary allowed hostname in the Host HTTP header. NOTE: this issue might not be reproducible, because the researcher is unable to provide a squid.conf file for a vulnerable system, and the observed behavior is consistent with a squid.conf file that was (perhaps inadvertently) designed to allow access based on a "req_header Host" acl regex that matches www.uol.com.br
CVE-2013-4115 2 Opensuse, Squid-cache 2 Opensuse, Squid 2026-04-29 7.5 HIGH N/A
Buffer overflow in the idnsALookup function in dns_internal.cc in Squid 3.2 through 3.2.11 and 3.3 through 3.3.6 allows remote attackers to cause a denial of service (memory corruption and server termination) via a long name in a DNS lookup request.
CVE-2010-0308 1 Squid-cache 1 Squid 2026-04-29 4.0 MEDIUM N/A
lib/rfc1035.c in Squid 2.x, 3.0 through 3.0.STABLE22, and 3.1 through 3.1.0.15 allows remote attackers to cause a denial of service (assertion failure) via a crafted DNS packet that only contains a header.
CVE-2012-5643 1 Squid-cache 1 Squid 2026-04-29 5.0 MEDIUM N/A
Multiple memory leaks in tools/cachemgr.cc in cachemgr.cgi in Squid 2.x and 3.x before 3.1.22, 3.2.x before 3.2.4, and 3.3.x before 3.3.0.2 allow remote attackers to cause a denial of service (memory consumption) via (1) invalid Content-Length headers, (2) long POST requests, or (3) crafted authentication credentials.
CVE-2009-2621 1 Squid-cache 1 Squid 2026-04-23 5.0 MEDIUM N/A
Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.
CVE-2009-2622 1 Squid-cache 1 Squid 2026-04-23 5.0 MEDIUM N/A
Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 allows remote attackers to cause a denial of service via malformed requests including (1) "missing or mismatched protocol identifier," (2) missing or negative status value," (3) "missing version," or (4) "missing or invalid status number," related to (a) HttpMsg.cc and (b) HttpReply.cc.