How severe is CVE-2023-52426?

CVE-2023-52426 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-52426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-52426?

CVE-2023-52426 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-52426?

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

Does CVE-2023-52426 have an EU (EUVD) identifier?

Yes. CVE-2023-52426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57053.

When was CVE-2023-52426 published?

CVE-2023-52426 was published on 2024-02-04 and last updated on 2026-06-17.

CVE-2023-52426

CVE-2023-52426 is a medium-severity vulnerability in Libexpat Project Libexpat with a CVSS 3.x base score of 5.5. 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-776.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
EPSS exploit prediction: 0% (29th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2023-57053
Weakness: CWE-776
Affected product: Libexpat Project Libexpat
Published: 2024-02-04
Last modified: 2026-06-17

Description

libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.

Frequently asked questions

What is CVE-2023-52426?: libexpat through 2.5.0 allows recursive XML Entity Expansion if XML_DTD is undefined at compile time.
How severe is CVE-2023-52426?: CVE-2023-52426 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-52426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (29th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-52426?: CVE-2023-52426 affects Libexpat Project Libexpat. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-52426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2023-52426 have an EU (EUVD) identifier?: Yes. CVE-2023-52426 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2023-57053.
When was CVE-2023-52426 published?: CVE-2023-52426 was published on 2024-02-04 and last updated on 2026-06-17.

References

Affected products (1)

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

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