How severe is CVE-2024-45490?

CVE-2024-45490 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2024-45490 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-45490?

CVE-2024-45490 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-45490?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2024-45490 have an EU (EUVD) identifier?

Yes. CVE-2024-45490 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41509.

When was CVE-2024-45490 published?

CVE-2024-45490 was published on 2024-08-30 and last updated on 2026-06-17.

CVE-2024-45490

CVE-2024-45490 is a high-severity vulnerability in Libexpat Project Libexpat with a CVSS 3.x base score of 7.5. 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-611.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-41509
Weakness: CWE-611
Affected product: Libexpat Project Libexpat
Published: 2024-08-30
Last modified: 2026-06-17

Description

An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.

Frequently asked questions

What is CVE-2024-45490?: An issue was discovered in libexpat before 2.6.3. xmlparse.c does not reject a negative length for XML_ParseBuffer.
How severe is CVE-2024-45490?: CVE-2024-45490 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2024-45490 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-45490?: CVE-2024-45490 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-45490?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2024-45490 have an EU (EUVD) identifier?: Yes. CVE-2024-45490 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-41509.
When was CVE-2024-45490 published?: CVE-2024-45490 was published on 2024-08-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*

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