HOMEVULNERABILITIESCVE-2018-13818
CRITICAL

CVE-2018-13818

CWE-94Published: July 10, 2018· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Twig before 2.4.4 allows Server-Side Template Injection (SSTI) via the search search_key parameter. NOTE: the vendor points out that Twig itself is not a web application and states that it is the responsibility of web applications using Twig to properly wrap input to it

NVD Source

Technical Analysis

CVE-2018-13818 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

symfony1 product(s)
twig
Source: NVD CPE · 1 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

PATCHhttps://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafeb
PATCHhttps://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafeb
ADVISORYhttps://github.com/twigphp/Twig/issues/2743
ADVISORYhttps://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20
ADVISORYhttps://www.exploit-db.com/exploits/44102/
ADVISORYhttps://github.com/twigphp/Twig/issues/2743
ADVISORYhttps://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20
ADVISORYhttps://www.exploit-db.com/exploits/44102/

All References (10)

→
https://github.com/twigphp/Twig/blob/2.x/CHANGELOGRelease Notes
→
https://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafebPatch · Third Party Advisory
→
https://github.com/twigphp/Twig/issues/2743Exploit · Third Party Advisory
→
https://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20Exploit · Third Party Advisory
→
https://www.exploit-db.com/exploits/44102/Exploit · Third Party Advisory · VDB Entry
→
https://github.com/twigphp/Twig/blob/2.x/CHANGELOGRelease Notes
→
https://github.com/twigphp/Twig/commit/eddb97148ad779f27e670e1e3f19fb323aedafebPatch · Third Party Advisory
→
https://github.com/twigphp/Twig/issues/2743Exploit · Third Party Advisory
→
https://mobile.twitter.com/jameel_nabbo/status/1032593354704515072?s=20Exploit · Third Party Advisory
→
https://www.exploit-db.com/exploits/44102/Exploit · Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2018-13818
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-94
CISA KEVNo
Affected1 vendor(s)
PublishedJul 10, 2018

Related CVEs (CWE-94)

CVE-2014-7192
10.0
CVE-2008-4502
10.0
CVE-2021-23281
10.0
CVE-2023-37466
10.0
CVE-2013-5912
10.0
CVE-2012-6046
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-13818 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. CVE data is provided under the NVD usage policy.
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