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CVE-2018-12540

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

8.8 HighPublic exploitFix available

CVE-2018-12540 is a high vulnerability (CVSS 8.8) in Eclipse Vert.x, published July 12, 2018. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 1.99%, the 81st percentile. Fixed in io.vertx:vertx-web 3.5.3.

What does this mean?
Severity
8.8 HighCVSS 3.0, NVD
Exploit chance
1.99%EPSS, 81st percentile
Exploitation
None known2 public exploits

Description

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.99%Down 4.2 points since Apr 14, 2021
90%50%10%1%

Affected products

Affected packages

Affected packages
PackageAffectedFixed
io.vertx:vertx-web
Maven
3.0.0 up to 3.5.3
3.5.3
io.vertx:vertx-web
Maven
3.0.0 up to 3.5.3, plus listed versions
3.1.03.2.03.2.13.3.03.3.0.CR1
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3.3.0.CR23.3.13.3.23.3.33.4.03.4.0.Beta13.4.13.4.23.5.03.5.0.Beta13.5.13.5.23.5.2.CR13.5.2.CR23.5.2.CR33.5.3.CR1
3.5.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubbernard-wagner/vertx-web-xsrf2018-06-15
PoC in GitHubtafamace/CVE-2018-125402018-11-19

What each source reports

NVD Score used8.8

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
CVE-2018-12540
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-352
Updated
2026-11-02
CVE ListNo score

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
CVE-2018-12540
Weakness
CWE-352
Updated
2026-11-02
EUVDEUVD-2018-0690No score

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
EUVD-2018-0690
Updated
2026-11-03
GitHub AdvisoriesGHSA-rvgg-f8qm-6h7jNo score

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

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
GHSA-rvgg-f8qm-6h7j
Weakness
CWE-352
Updated
2026-11-02
OSV8.8

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
CVE-2018-12540
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-rvgg-f8qm-6h7jNo score

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

In version from 3.0.0 to 3.5.2 of Eclipse Vert.x, the CSRFHandler do not assert that the XSRF Cookie matches the returned XSRF header/form parameter. This allows replay attacks with previously issued tokens which are not expired yet.

Record
GHSA-rvgg-f8qm-6h7j
Weakness
CWE-352
Updated
2026-11-02

History

History
RecordedChangedSources
facts
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

Dates are when Every CVE recorded each change. Upstream dates may differ.

References

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