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CVE-2018-1999024

Macro in MathJax running untrusted Javascript within a web browser

5.4 MediumFix available

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

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
Low
Integrity
Low
Availability
None

Exploit likelihood

1.45%Up 0.8 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.4

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
CVE-2018-1999024
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:P/A:N
Weakness
CWE-79
Updated
2026-11-02
CVE List No score

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
CVE-2018-1999024
Updated
2026-11-02
EUVDEUVD-2018-0212 No score

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
EUVD-2018-0212
Updated
2026-11-03
GitHub AdvisoriesGHSA-3c48-6pcv-88rm 5.4

Macro in MathJax running untrusted Javascript within a web browser

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
GHSA-3c48-6pcv-88rm
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVAZL-41294 5.4

CVE-2018-1999024 affecting package numpy for versions less than 1.26.3-4

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
AZL-41294
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-05
OSV 5.4

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
CVE-2018-1999024
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2018-1999024 5.4

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
DEBIAN-CVE-2018-1999024
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02
OSVGHSA-3c48-6pcv-88rm 5.4

Macro in MathJax running untrusted Javascript within a web browser

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
GHSA-3c48-6pcv-88rm
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Weakness
CWE-79
Updated
2026-11-02
OSVUBUNTU-CVE-2018-1999024 5.4

MathJax version prior to version 2.7.4 contains a Cross Site Scripting (XSS) vulnerability in the \unicode{} macro that can result in Potentially untrusted Javascript running within a web browser. This attack appear to be exploitable via The victim must view a page where untrusted content is processed using Mathjax. This vulnerability appears to have been fixed in 2.7.4 and later.

Record
UBUNTU-CVE-2018-1999024
CVSS 3.0
5.4 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mathjax
npm
 before 2.7.4
2.7.4
numpy
Azure Linux:3
 before 1.26.3-4
1.26.3-4
mathjax
Debian:12
 before 2.7.4+dfsg-1
2.7.4+dfsg-1
mathjax
Debian:13
 before 2.7.4+dfsg-1
2.7.4+dfsg-1
mathjax
Debian:14
 before 2.7.4+dfsg-1
2.7.4+dfsg-1
mathjax
Ubuntu:14.04:LTS
 All versions, plus listed versions
2.2-12.3-1
 None known
mathjax
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.5.3-12.6.0-12.6.1-1
 None known
mathjax
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.7.0-2ubuntu12.7.2+dfsg-12.7.3+dfsg-1
 None known

History

History
RecordedChangedSources
factsOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2018-1999024 is a medium vulnerability (CVSS 5.4) in Mathjax, published July 23, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.45%, the 73rd percentile. Fixed in mathjax 2.7.4.

References

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