CVE-2021-31347

Name: CVE-2021-31347
Creator: NVD / NIST
Published: 2021-04-16T18:15:13.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.19%

Last modified Jun 17, 2026

CVE-2021-31347 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_parse_str() performs incorrect memory handling while parsing crafted XML files (writing outside a memory region created by mmap).. EPSS estimates a 1.19% chance of exploitation in the next 30 days.

Description

An issue was discovered in libezxml.a in ezXML 0.8.6. The function ezxml_parse_str() performs incorrect memory handling while parsing crafted XML files (writing outside a memory region created by mmap).

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

1.19%

64.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-91

Affected Software

Vendor	Product	Versions
Ezxml Project	Ezxml	0.8.6
Debian	Debian Linux	9.0

References

https://lists.debian.org/debian-lts-announce/2021/07/msg00005.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/ezxml/bugs/27/Exploit, Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/07/msg00005.htmlMailing List, Third Party Advisory
https://sourceforge.net/p/ezxml/bugs/27/Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Apr 16, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31347?

How severe is CVE-2021-31347?

CVE-2021-31347 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.19% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31347?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-31347?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST