How severe is CVE-2024-39908?

CVE-2024-39908 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2024-39908 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-39908?

CVE-2024-39908 primarily affects Ruby-lang Rexml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2024-39908?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-39908 have an EU (EUVD) identifier?

Yes. CVE-2024-39908 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2251.

When was CVE-2024-39908 published?

CVE-2024-39908 was published on 2024-07-16 and last updated on 2026-06-17.

CVE-2024-39908

CVE-2024-39908 is a medium-severity vulnerability in Ruby-lang Rexml with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 1% (71st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-2251
Weakness: CWE-400
Affected product: Ruby-lang Rexml
Published: 2024-07-16
Last modified: 2026-06-17

Description

REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.

Frequently asked questions

What is CVE-2024-39908?: REXML is an XML toolkit for Ruby. The REXML gem before 3.3.1 has some DoS vulnerabilities when it parses an XML that has many specific characters such as `<`, `0` and `%>`. If you need to parse untrusted XMLs, you many be impacted to these vulnerabilities. The REXML gem 3.3.2 or later include the patches to fix these vulnerabilities. Users are advised to upgrade. Users unable to upgrade should avoid parsing untrusted XML strings.
How severe is CVE-2024-39908?: CVE-2024-39908 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2024-39908 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-39908?: CVE-2024-39908 primarily affects Ruby-lang Rexml. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2024-39908?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-39908 have an EU (EUVD) identifier?: Yes. CVE-2024-39908 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-2251.
When was CVE-2024-39908 published?: CVE-2024-39908 was published on 2024-07-16 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ruby-lang:rexml:*:*:*:*:*:ruby:*:*
cpe:2.3:o:netapp:bootstrap_os:-:*:*:*:*:*:*:*

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