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CVE-2017-5660

27
FAUCET Score

CVE-2017-5660 describes a vulnerability in Apache Traffic Server (ATS) versions 6.2.0 and prior, and 7.0.0 and prior, related to improper handling of the Host header with line folding. This flaw, rated 8.6 HIGH (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N), allows an unauthenticated attacker to manipulate upstream proxy interactions, potentially leading to the use of an incorrect host and a high impact on integrity. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.2.0CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*
6.2.1CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:6.2.1:*:*:*:*:*:*:*
6.2.1CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:6.2.1:rc0:*:*:*:*:*:*
6.2.2CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:6.2.2:*:*:*:*:*:*:*
6.2.2CPE matchmatch criteria
cpe:2.3:a:apache:traffic_server:6.2.2:rc0:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.6HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.97%
Probability of exploitation in next 30 days
EPSS Percentile
78.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0197 is in the 62nd percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.apache.org / thread.html/22d84783d94c53a5132ec89f002fe5165c87561a9428bcb6713b3c98%40%3Cdev.trafficserver.apache.org%3E
debian.org / security/2018/dsa-4128
Third Party Advisory