CVE-2024-43398

mediumpriority · track · 0EPSS 0.012 · 68 %ileDEEUNLRUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.21% (68th) EPSS
CVSS 5.9 · medium
Is it mine?
19 products
Check your exposure
Who says so?
7 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like REXML::Document.new, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. The REXML gem 3.3.6 or later include the patch to fix the vulnerability.

01

cvss

Technical severity, 0–10. One row per scoring source.

5.9
010

base score 0–10 · higher = more severe · hover a vector to decode

v3.15.9mediumAV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU
v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 2.2 · impact 3.6
v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV
v3.15.4mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.15.9mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · NCSC-NL NL
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-776USCWE-776USCWE-776USCWE-776US
04

affected products (19)

Products and version ranges known to be affected.

05

advisories (4)

Vendor and ecosystem advisories describing this.

  • NCSC-2025-0351Kwetsbaarheden verholpen in Apple MacOSNL2025-11-04csaf · ncsc_nlNL

    Apple heeft kwetsbaarheden verholpen in macOS Sonoma 14.8.2, macOS Sequoia 15.7.2 en MacOS Tahoe 26.1.

  • WID-SEC-W-2024-1896Ruby: Schwachstelle ermöglicht Denial of ServiceDeutsch2024-08-21csaf · cert_bundDE

    Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Ruby ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • WID-SEC-W-2025-2475Apple macOS: Mehrere SchwachstellenDeutsch2025-11-03csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in Apple macOS ausnutzen, um Informationen offenzulegen, um einen Denial of Service Angriff durchzuführen, um Sicherheitsvorkehrungen zu umgehen, um Dateien zu manipulieren, und um seine Privilegien zu erhöhen.

  • GHSA-vmwr-mc7x-5vc3REXML denial of service vulnerability2024-08-22ghsa · osvUS

    ### Impact The REXML gem before 3.3.6 has a DoS vulnerability when it parses an XML that has many deep elements that have same local name attributes. If you need to parse untrusted XMLs with tree parser API like `REXML::Document.new`, you may be impacted to this vulnerability. If you use other parser APIs such as stream parser API and SAX2 parser API, this vulnerability is not affected. ### Patches The REXML gem 3.3.6 or later include the patch to fix the vulnerability. ### Workarounds Don't parse untrusted XMLs with tree parser API. ### References * https://www.ruby-lang.org/en/news/2024/08/22/dos-rexml-cve-2024-43398/ : An announce on www.ruby-lang.org

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducert_bundncsc_nlnvdosvNVDCVE.orgMITRE
published 2024-08-22modified 2026-06-17
08

references (11)

External citations — patches, advisories, analysis.

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