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CVE-2018-12540

26
FAUCET Score

CVE-2018-12540 describes a Cross-Site Request Forgery (CSRF) vulnerability in Eclipse Vert.x versions 3.0.0 to 3.5.2, where the CSRFHandler fails to validate that the XSRF cookie matches the corresponding header or form parameter. This flaw enables replay attacks using previously issued, unexpired tokens. Rated 8.8 HIGH (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H), it indicates a network-exploitable vulnerability with low attack complexity, requiring user interaction, and potentially leading to high impacts on confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0.0, <= 3.5.2CPE matchmatch criteria
cpe:2.3:a:eclipse:vert.x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.99%
Probability of exploitation in next 30 days
EPSS Percentile
78.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0199 is in the 78th percentile among its peer group of 14,852 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: io.vertx:vertx-webFixed in: 3.5.3
redhatpatch availablevia redhat_api
Product: Text-Only RHOARFixed in: vertx-web
View patch

Vendor Advisories (2)

mavenGHSA-rvgg-f8qm-6h7jhigh

High severity vulnerability that affects io.vertx:vertx-web

Oct 17, 2018
redhatCVE-2018-12540Moderate

vertx-web: Incomplete CSRF validation by CSRFHandler

Jul 12, 2018

References

access.redhat.com / errata/RHSA-2018:2371
ExploitThird Party Advisory
bugs.eclipse.org / bugs/show_bug.cgi
ExploitVendor Advisory
lists.apache.org / thread.html/r10aef585c521f8ef603f5831f9d97a27d920624025131da950e0c62f%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/r3fffda8e947edaa359152c8dc4c4ea9c96fd8ced1999bbce92bc6b25%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/r59482ebed302aa49ac7e0c51737499746b0d086fcdeb8f90e705951f%40%3Ccommits.pulsar.apache.org%3E
lists.apache.org / thread.html/rc5b4ae8a7caae6d3d5b3266cb050823b96dd62b30718b90b778d3d8b%40%3Ccommits.pulsar.apache.org%3E