CVE-2026-45186

LOW

CVSS v3.1: 2.9 · EPSS: 0.0031 (22.8 percentile)

No privilegesNo user interaction

Source data as of:

At a glance

Severity
LOW
CVSS
2.9 v3.1 · NVD
EPSS
0.0031 (22.8 percentile) · FIRST.org
CISA KEV
No
Attack conditions (CVSS vector)
No privilegesNo user interaction · Source: NVD Vector
Affected vendors
libexpat_project
Published
2026-05-10 · Modified: 2026-06-30
References
Jump to references (8)

CVSS / EPSS / KEV

CVSS v3.1 2.9 / 10 LOW Source: NVD
EPSS 0.0031 22.8 percentile Source: FIRST.org
CISA KEV No Source: CISA

Source — CVSS: NVD · EPSS: FIRST.org · KEV: CISA. Data & Sources

Description

In libexpat before 2.8.1, the computational complexity of attribute name collision checks allows a denial of service via moderately sized crafted XML input.

Record details

CVE ID
CVE-2026-45186
CVSS (v3.1)
2.9 (LOW)
Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Exploitability subscore
1.4
Impact subscore
1.4
EPSS
0.0031 (22.8 percentile) — 2026-06-30
CISA KEV
No
Weakness (CWE)
CWE-407
Affected vendors
libexpat_project
Affected configurations (CPE)
1
Published
2026-05-10
Modified
2026-06-30
Status
Modified

References

Reference URLs as listed by NVD, grouped by a mechanical match on the link's host/pattern. Labels describe the link type only.

Related records

Other records sharing a factual facet, for cross-reference. A descriptive neighbourhood — ordering does not imply priority and is not a recommendation.

Same weakness type (CWE)

CVE-2026-34827 HIGH CVSS 7.5 CVE-2026-40164 HIGH CVSS 7.5 CVE-2026-41292 HIGH CVSS 7.5 CVE-2026-49851 HIGH CVSS 7.5

Published the same year

CVE-2026-0881 CRITICAL CVSS 10.0 CVE-2026-2760 CRITICAL CVSS 10.0 CVE-2026-2761 CRITICAL CVSS 10.0 CVE-2026-2768 CRITICAL CVSS 10.0
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