HOMEVULNERABILITIESCVE-2018-11408
MEDIUM

CVE-2018-11408

CWE-601Published: June 13, 2018· Updated: Jun 17, 2026

6.1
CVSS v3.1

Official Description

The security handlers in the Security component in Symfony in 2.7.x before 2.7.48, 2.8.x before 2.8.41, 3.3.x before 3.3.17, 3.4.x before 3.4.11, and 4.0.x before 4.0.11 have an Open redirect vulnerability when security.http_utils is inlined by a container. NOTE: this issue exists because of an incomplete fix for CVE-2017-16652.

NVD Source

Technical Analysis

CVE-2018-11408 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
sensiolabs1 product(s)
symfony
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
ADVISORYhttps://symfony.com/blog/cve-2018-11408-open-redirect-vulnerability-on-security-handlers
ADVISORYhttps://lists.debian.org/debian-lts-announce/2019/03/msg00009.html
ADVISORYhttps://symfony.com/blog/cve-2018-11408-open-redirect-vulnerability-on-security-handlers

All References (10)

→
https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlThird Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/
→
https://symfony.com/blog/cve-2018-11408-open-redirect-vulnerability-on-security-handlersVendor Advisory
→
https://lists.debian.org/debian-lts-announce/2019/03/msg00009.htmlThird Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/G4XNBMFW33H47O5TZGA7JYCVLDBCXAJV/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UBQK7JDXIELADIPGZIOUCZKMAJM5LSBW/
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WU5N2TZFNGXDGMXMPP7LZCWTFLENF6WH/
→
https://symfony.com/blog/cve-2018-11408-open-redirect-vulnerability-on-security-handlersVendor Advisory

Quick Facts

CVE IDCVE-2018-11408
CVSS Score6.1 / 10
SeverityMEDIUM
WeaknessCWE-601
CISA KEVNo
Affected2 vendor(s)
PublishedJun 13, 2018

Related CVEs (CWE-601)

CVE-2025-55031
9.8
CVE-2022-31657
9.8
CVE-2024-22891
9.8
CVE-2026-61451
9.6
CVE-2022-40083
9.6
CVE-2026-6795
9.6

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-11408 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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