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CVE-2018-20592

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node...

5.5 MediumFix available

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.49%Down 0.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 5.5

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
CVE-2018-20592
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-416
Updated
2026-11-02
CVE List No score

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
CVE-2018-20592
Updated
2026-11-02
EUVDEUVD-2018-13145 No score

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
EUVD-2018-13145
Updated
2026-11-03
GitHub AdvisoriesGHSA-5j9x-g954-9jrp 5.5

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node...

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
GHSA-5j9x-g954-9jrp
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-416
Updated
2026-11-02
OSV 5.5

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
CVE-2018-20592
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2018-20592 5.5

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
DEBIAN-CVE-2018-20592
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2018-20592 5.5

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc.

Record
UBUNTU-CVE-2018-20592
CVSS 3.0
5.5 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVMGASA-2019-0159 No score

Updated mxml packages fix security vulnerabilities

Updated mxml packages fix security vulnerabilities:

An issue has been found in Mini-XML (aka mxml) 2.12. It is a stack-based buffer overflow in mxml_write_node in mxml-file.c via vectors involving a double-precision floating point number and the '<order type="real">' substring, as demonstrated by testmxml (CVE-2018-20004).

An issue has been found in Mini-XML (aka mxml) 2.12. It is a use-after-free in mxmlWalkNext in mxml-search.c, as demonstrated by mxmldoc (CVE-2018-20005).

In Mini-XML (aka mxml) v2.12, there is a use-after-free in the mxmlAdd function of the mxml-node.c file. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted xml file, as demonstrated by mxmldoc (CVE-2018-20592).

In Mini-XML (aka mxml) v2.12, there is stack-based buffer overflow in the scan_file function in mxmldoc.c (CVE-2018-20593).

Record
MGASA-2019-0159
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mxml
Debian:12
 before 3.0-1
3.0-1
mxml
Debian:13
 before 3.0-1
3.0-1
mxml
Debian:14
 before 3.0-1
3.0-1
mxml
Mageia:6
From an advisory covering 4 CVEs
 before 3.0-1.mga6
3.0-1.mga6
mxml
Ubuntu:16.04:LTS
 All versions, plus listed versions
2.7-12.9-0ubuntu12.9-0ubuntu2
 None known
mxml
Ubuntu:18.04:LTS
 All versions, plus listed versions
2.10-1
 None known
mxml
Ubuntu:20.04:LTS
 All versions, plus listed versions
2.12-23.1-1
 None known
mxml
Ubuntu:22.04:LTS
 All versions, plus listed versions
3.2-13.3-1
 None known
mxml
Ubuntu:24.04:LTS
 All versions, plus listed versions
3.3.1-13.3.1-1build1
 None known
mxml
Ubuntu:25.10
 All versions, plus listed versions
3.3.1-1build1
 None known
mxml
Ubuntu:26.10
 All versions, plus listed versions
3.3.1-1build24.0.4-6
 None known
mxml
Ubuntu:26.04:LTS
 All versions, plus listed versions
3.3.1-1build13.3.1-1build2
 None known

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2018-20592 is a medium vulnerability (CVSS 5.5) in Msweet Mini-xml, published December 30, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.49%, the 74th percentile. Fixed in mxml 3.0-1.

References

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